Bluebulb Projects' The Measure of Things presents:
200,000,000 is about two-and-a-half times the number of Copies of Wii Sports Sold.
In other words, it's 2.4190 times the count of Copies of Wii Sports Sold, and the count of Copies of Wii Sports Sold is 0.41340 times that amount.
(a.k.a. Wii スポーツ, a.k.a. Wi Supotsu
) (2006 edition) (sales figures as of March 31, 2015)