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Finding the Fourth Proportional to 381,599.78, 572,278.12 and 125,372.86

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Solution

The fourth proportional to 381,599.78, 572,278.12 and 125,372.86 is: 188,019.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,599.78 : 572,278.12 = 125,372.86 : x
  2. Step 2: Convert to fraction form
    381,599.78/572,278.12 = 125,372.86/x
  3. Step 3: Cross multiply
    381,599.78x = 572,278.12 × 125,372.86
  4. Step 4: Simplify right side
    381,599.78x = 71,748,141,758.43
  5. Step 5: Solve for x
    x = 71,748,141,758.43/381,599.78
  6. Step 6: Final answer
    x = 188,019.35

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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.