Home / 442,091.20-663,136.80-331,499.20

Finding the Fourth Proportional to 442,091.20, 663,136.80 and 331,499.20

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Solution

The fourth proportional to 442,091.20, 663,136.80 and 331,499.20 is: 497,248.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,091.20 : 663,136.80 = 331,499.20 : x
  2. Step 2: Convert to fraction form
    442,091.20/663,136.80 = 331,499.20/x
  3. Step 3: Cross multiply
    442,091.20x = 663,136.80 × 331,499.20
  4. Step 4: Simplify right side
    442,091.20x = 219,829,318,690.56
  5. Step 5: Solve for x
    x = 219,829,318,690.56/442,091.20
  6. Step 6: Final answer
    x = 497,248.80

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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.