Finding the Fourth Proportional to 198,971,651.92, 274,581,968.94 and 115,389,338.68
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Solution
The fourth proportional to 198,971,651.92, 274,581,968.94 and 115,389,338.68 is: 159,237,919.09
Step by Step Solution
- Step 1: Write the proportion equation
198,971,651.92 : 274,581,968.94 = 115,389,338.68 : x - Step 2: Convert to fraction form
198,971,651.92/274,581,968.94 = 115,389,338.68/x - Step 3: Cross multiply
198,971,651.92x = 274,581,968.94 × 115,389,338.68 - Step 4: Simplify right side
198,971,651.92x = 31,683,831,809,438,904 - Step 5: Solve for x
x = 31,683,831,809,438,904/198,971,651.92 - Step 6: Final answer
x = 159,237,919.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.