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Finding the Fourth Proportional to 256,885.93, 385,233.31 and 88,358.95

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Solution

The fourth proportional to 256,885.93, 385,233.31 and 88,358.95 is: 132,505.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,885.93 : 385,233.31 = 88,358.95 : x
  2. Step 2: Convert to fraction form
    256,885.93/385,233.31 = 88,358.95/x
  3. Step 3: Cross multiply
    256,885.93x = 385,233.31 × 88,358.95
  4. Step 4: Simplify right side
    256,885.93x = 34,038,810,776.62
  5. Step 5: Solve for x
    x = 34,038,810,776.62/256,885.93
  6. Step 6: Final answer
    x = 132,505.55

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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.