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Finding the Fourth Proportional to 240,115.68, 331,414.88 and 138,200.00

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Solution

The fourth proportional to 240,115.68, 331,414.88 and 138,200.00 is: 190,747.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,115.68 : 331,414.88 = 138,200.00 : x
  2. Step 2: Convert to fraction form
    240,115.68/331,414.88 = 138,200.00/x
  3. Step 3: Cross multiply
    240,115.68x = 331,414.88 × 138,200.00
  4. Step 4: Simplify right side
    240,115.68x = 45,801,534,067.93
  5. Step 5: Solve for x
    x = 45,801,534,067.93/240,115.68
  6. Step 6: Final answer
    x = 190,747.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.