India won with four balls to spare with Mandeep Singh playing a neat cameo of 37 runs. He took 27 runs to close out the game. He hit three boundaries and a six during the all-important knock.
Chasing a stiff 291-run target, the Indians suffered a top-order collapse before all-rounder Menaria scored a quickfire 69 off 52 balls that included two fours and eight sixes.
He was involved in a brilliant 128-run fifth wicket stand off just 107 balls with Jadhav (57), which denied the Black Caps a consolation win.
A late counter-attack by Mandeep then made sure that the hosts won the match comfortably. Having sealed the three-match ODI series already, India tested their bench strength by giving a chance to spinner Jalaj Saxena and batsman Sanju Samson.
Earlier, opener Anton Devcich top-scored for New Zealand A with a 85-ball 66, studded with eight boundaries, while Corey J Anderson hit 59.