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Finding the Fourth Proportional to 239,593.43, 359,433.17 and 81,784.97

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Solution

The fourth proportional to 239,593.43, 359,433.17 and 81,784.97 is: 122,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,593.43 : 359,433.17 = 81,784.97 : x
  2. Step 2: Convert to fraction form
    239,593.43/359,433.17 = 81,784.97/x
  3. Step 3: Cross multiply
    239,593.43x = 359,433.17 × 81,784.97
  4. Step 4: Simplify right side
    239,593.43x = 29,396,232,128.50
  5. Step 5: Solve for x
    x = 29,396,232,128.50/239,593.43
  6. Step 6: Final answer
    x = 122,692.15

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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.