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Finding the Fourth Proportional to 381,937.32, 572,967.95 and 129,233.34

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Solution

The fourth proportional to 381,937.32, 572,967.95 and 129,233.34 is: 193,870.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,937.32 : 572,967.95 = 129,233.34 : x
  2. Step 2: Convert to fraction form
    381,937.32/572,967.95 = 129,233.34/x
  3. Step 3: Cross multiply
    381,937.32x = 572,967.95 × 129,233.34
  4. Step 4: Simplify right side
    381,937.32x = 74,046,561,245.29
  5. Step 5: Solve for x
    x = 74,046,561,245.29/381,937.32
  6. Step 6: Final answer
    x = 193,870.98

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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.