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Finding the Fourth Proportional to 347,138.73, 521,003.97 and 136,924.29

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Solution

The fourth proportional to 347,138.73, 521,003.97 and 136,924.29 is: 205,503.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,138.73 : 521,003.97 = 136,924.29 : x
  2. Step 2: Convert to fraction form
    347,138.73/521,003.97 = 136,924.29/x
  3. Step 3: Cross multiply
    347,138.73x = 521,003.97 × 136,924.29
  4. Step 4: Simplify right side
    347,138.73x = 71,338,098,679.43
  5. Step 5: Solve for x
    x = 71,338,098,679.43/347,138.73
  6. Step 6: Final answer
    x = 205,503.14

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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.