Home / 442,862.20-663,839.70-217,876.60

Finding the Fourth Proportional to 442,862.20, 663,839.70 and 217,876.60

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Solution

The fourth proportional to 442,862.20, 663,839.70 and 217,876.60 is: 326,591.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,862.20 : 663,839.70 = 217,876.60 : x
  2. Step 2: Convert to fraction form
    442,862.20/663,839.70 = 217,876.60/x
  3. Step 3: Cross multiply
    442,862.20x = 663,839.70 × 217,876.60
  4. Step 4: Simplify right side
    442,862.20x = 144,635,136,781.02
  5. Step 5: Solve for x
    x = 144,635,136,781.02/442,862.20
  6. Step 6: Final answer
    x = 326,591.74

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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.