Home / 278,821.25-418,240.97-132,729.46

Finding the Fourth Proportional to 278,821.25, 418,240.97 and 132,729.46

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Solution

The fourth proportional to 278,821.25, 418,240.97 and 132,729.46 is: 199,098.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,821.25 : 418,240.97 = 132,729.46 : x
  2. Step 2: Convert to fraction form
    278,821.25/418,240.97 = 132,729.46/x
  3. Step 3: Cross multiply
    278,821.25x = 418,240.97 × 132,729.46
  4. Step 4: Simplify right side
    278,821.25x = 55,512,898,097.98
  5. Step 5: Solve for x
    x = 55,512,898,097.98/278,821.25
  6. Step 6: Final answer
    x = 199,098.52

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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.