Finding the Fourth Proportional to 212,420,113.86, 318,664,221.11 and 89,616,520.08
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Solution
The fourth proportional to 212,420,113.86, 318,664,221.11 and 89,616,520.08 is: 134,439,145.38
Step by Step Solution
- Step 1: Write the proportion equation
212,420,113.86 : 318,664,221.11 = 89,616,520.08 : x - Step 2: Convert to fraction form
212,420,113.86/318,664,221.11 = 89,616,520.08/x - Step 3: Cross multiply
212,420,113.86x = 318,664,221.11 × 89,616,520.08 - Step 4: Simplify right side
212,420,113.86x = 28,557,578,569,433,792 - Step 5: Solve for x
x = 28,557,578,569,433,792/212,420,113.86 - Step 6: Final answer
x = 134,439,145.38
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.