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Finding the Fourth Proportional to 256,974.64, 385,487.77 and 88,472.66

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Solution

The fourth proportional to 256,974.64, 385,487.77 and 88,472.66 is: 132,717.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,974.64 : 385,487.77 = 88,472.66 : x
  2. Step 2: Convert to fraction form
    256,974.64/385,487.77 = 88,472.66/x
  3. Step 3: Cross multiply
    256,974.64x = 385,487.77 × 88,472.66
  4. Step 4: Simplify right side
    256,974.64x = 34,105,129,151.91
  5. Step 5: Solve for x
    x = 34,105,129,151.91/256,974.64
  6. Step 6: Final answer
    x = 132,717.88

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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.