Home / 442,097.20-663,145.80-331,505.20

Finding the Fourth Proportional to 442,097.20, 663,145.80 and 331,505.20

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Solution

The fourth proportional to 442,097.20, 663,145.80 and 331,505.20 is: 497,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,097.20 : 663,145.80 = 331,505.20 : x
  2. Step 2: Convert to fraction form
    442,097.20/663,145.80 = 331,505.20/x
  3. Step 3: Cross multiply
    442,097.20x = 663,145.80 × 331,505.20
  4. Step 4: Simplify right side
    442,097.20x = 219,836,281,058.16
  5. Step 5: Solve for x
    x = 219,836,281,058.16/442,097.20
  6. Step 6: Final answer
    x = 497,257.80

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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.