Bangladesh whipped the West Indies by 179 runs to take the 3rd ODI and win the series 2-1.
Chasing 297 for victory, West Indies was bowled out for 117 with Akeal Hosein scoring 27 and Nasum Ahmed and Rishad Hossain taking three wickets apiece.
Earlier, Souma Sarkar scored 91 and Saif Hassan 80 as Bangladesh put up 296 for 8, with Hosein taking 4 for 41.
The teams meet in the 1st T20I on Monday at Chattogram.