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Finding the Fourth Proportional to 231,397.62, 347,061.36 and 79,617.78

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Solution

The fourth proportional to 231,397.62, 347,061.36 and 79,617.78 is: 119,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,397.62 : 347,061.36 = 79,617.78 : x
  2. Step 2: Convert to fraction form
    231,397.62/347,061.36 = 79,617.78/x
  3. Step 3: Cross multiply
    231,397.62x = 347,061.36 × 79,617.78
  4. Step 4: Simplify right side
    231,397.62x = 27,632,255,006.98
  5. Step 5: Solve for x
    x = 27,632,255,006.98/231,397.62
  6. Step 6: Final answer
    x = 119,414.60

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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.