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Finding the Fourth Proportional to 391,250.54, 586,826.79 and 124,988.96

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Solution

The fourth proportional to 391,250.54, 586,826.79 and 124,988.96 is: 187,467.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,250.54 : 586,826.79 = 124,988.96 : x
  2. Step 2: Convert to fraction form
    391,250.54/586,826.79 = 124,988.96/x
  3. Step 3: Cross multiply
    391,250.54x = 586,826.79 × 124,988.96
  4. Step 4: Simplify right side
    391,250.54x = 73,346,867,248.10
  5. Step 5: Solve for x
    x = 73,346,867,248.10/391,250.54
  6. Step 6: Final answer
    x = 187,467.77

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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.