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Finding the Fourth Proportional to 391,498.62, 587,251.40 and 154,841.33

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Solution

The fourth proportional to 391,498.62, 587,251.40 and 154,841.33 is: 232,263.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,498.62 : 587,251.40 = 154,841.33 : x
  2. Step 2: Convert to fraction form
    391,498.62/587,251.40 = 154,841.33/x
  3. Step 3: Cross multiply
    391,498.62x = 587,251.40 × 154,841.33
  4. Step 4: Simplify right side
    391,498.62x = 90,930,786,081.98
  5. Step 5: Solve for x
    x = 90,930,786,081.98/391,498.62
  6. Step 6: Final answer
    x = 232,263.36

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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.