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Finding the Fourth Proportional to 439,959.74, 660,011.09 and 136,282.97

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Solution

The fourth proportional to 439,959.74, 660,011.09 and 136,282.97 is: 204,446.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,959.74 : 660,011.09 = 136,282.97 : x
  2. Step 2: Convert to fraction form
    439,959.74/660,011.09 = 136,282.97/x
  3. Step 3: Cross multiply
    439,959.74x = 660,011.09 × 136,282.97
  4. Step 4: Simplify right side
    439,959.74x = 89,948,272,546.75
  5. Step 5: Solve for x
    x = 89,948,272,546.75/439,959.74
  6. Step 6: Final answer
    x = 204,446.60

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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.