Home / 442,037.20-663,055.80-331,445.20

Finding the Fourth Proportional to 442,037.20, 663,055.80 and 331,445.20

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Solution

The fourth proportional to 442,037.20, 663,055.80 and 331,445.20 is: 497,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,037.20 : 663,055.80 = 331,445.20 : x
  2. Step 2: Convert to fraction form
    442,037.20/663,055.80 = 331,445.20/x
  3. Step 3: Cross multiply
    442,037.20x = 663,055.80 × 331,445.20
  4. Step 4: Simplify right side
    442,037.20x = 219,766,662,242.16
  5. Step 5: Solve for x
    x = 219,766,662,242.16/442,037.20
  6. Step 6: Final answer
    x = 497,167.80

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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.