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Finding the Fourth Proportional to 257,546.56, 386,225.20 and 89,023.68

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Solution

The fourth proportional to 257,546.56, 386,225.20 and 89,023.68 is: 133,502.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,546.56 : 386,225.20 = 89,023.68 : x
  2. Step 2: Convert to fraction form
    257,546.56/386,225.20 = 89,023.68/x
  3. Step 3: Cross multiply
    257,546.56x = 386,225.20 × 89,023.68
  4. Step 4: Simplify right side
    257,546.56x = 34,383,188,612.74
  5. Step 5: Solve for x
    x = 34,383,188,612.74/257,546.56
  6. Step 6: Final answer
    x = 133,502.81

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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.