Finding the Fourth Proportional to 397,376,417.62, 548,369,777.95 and 218,758,854.21
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Solution
The fourth proportional to 397,376,417.62, 548,369,777.95 and 218,758,854.21 is: 301,881,890.79
Step by Step Solution
- Step 1: Write the proportion equation
397,376,417.62 : 548,369,777.95 = 218,758,854.21 : x - Step 2: Convert to fraction form
397,376,417.62/548,369,777.95 = 218,758,854.21/x - Step 3: Cross multiply
397,376,417.62x = 548,369,777.95 × 218,758,854.21 - Step 4: Simplify right side
397,376,417.62x = 119,960,744,307,734,144 - Step 5: Solve for x
x = 119,960,744,307,734,144/397,376,417.62 - Step 6: Final answer
x = 301,881,890.79
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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.