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Finding the Fourth Proportional to 218,811.92, 328,252.91 and 92,453.39

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Solution

The fourth proportional to 218,811.92, 328,252.91 and 92,453.39 is: 138,694.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,811.92 : 328,252.91 = 92,453.39 : x
  2. Step 2: Convert to fraction form
    218,811.92/328,252.91 = 92,453.39/x
  3. Step 3: Cross multiply
    218,811.92x = 328,252.91 × 92,453.39
  4. Step 4: Simplify right side
    218,811.92x = 30,348,092,972.68
  5. Step 5: Solve for x
    x = 30,348,092,972.68/218,811.92
  6. Step 6: Final answer
    x = 138,694.88

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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.