Finding the Fourth Proportional to 212,744,660.62, 318,462,478.90 and 138,809,239.74
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Solution
The fourth proportional to 212,744,660.62, 318,462,478.90 and 138,809,239.74 is: 207,786,810.97
Step by Step Solution
- Step 1: Write the proportion equation
212,744,660.62 : 318,462,478.90 = 138,809,239.74 : x - Step 2: Convert to fraction form
212,744,660.62/318,462,478.90 = 138,809,239.74/x - Step 3: Cross multiply
212,744,660.62x = 318,462,478.90 × 138,809,239.74 - Step 4: Simplify right side
212,744,660.62x = 44,205,534,581,824,792 - Step 5: Solve for x
x = 44,205,534,581,824,792/212,744,660.62 - Step 6: Final answer
x = 207,786,810.97
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.