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Finding the Fourth Proportional to 256,781.16, 385,077.51 and 88,253.73

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Solution

The fourth proportional to 256,781.16, 385,077.51 and 88,253.73 is: 132,348.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,781.16 : 385,077.51 = 88,253.73 : x
  2. Step 2: Convert to fraction form
    256,781.16/385,077.51 = 88,253.73/x
  3. Step 3: Cross multiply
    256,781.16x = 385,077.51 × 88,253.73
  4. Step 4: Simplify right side
    256,781.16x = 33,984,526,596.61
  5. Step 5: Solve for x
    x = 33,984,526,596.61/256,781.16
  6. Step 6: Final answer
    x = 132,348.21

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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.