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Finding the Fourth Proportional to 257,472.32, 386,225.49 and 89,008.93

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Solution

The fourth proportional to 257,472.32, 386,225.49 and 89,008.93 is: 133,519.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,472.32 : 386,225.49 = 89,008.93 : x
  2. Step 2: Convert to fraction form
    257,472.32/386,225.49 = 89,008.93/x
  3. Step 3: Cross multiply
    257,472.32x = 386,225.49 × 89,008.93
  4. Step 4: Simplify right side
    257,472.32x = 34,377,515,997.34
  5. Step 5: Solve for x
    x = 34,377,515,997.34/257,472.32
  6. Step 6: Final answer
    x = 133,519.27

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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.