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Finding the Fourth Proportional to 667,230.67, 920,780.22 and 361,310.68

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Solution

The fourth proportional to 667,230.67, 920,780.22 and 361,310.68 is: 498,609.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,230.67 : 920,780.22 = 361,310.68 : x
  2. Step 2: Convert to fraction form
    667,230.67/920,780.22 = 361,310.68/x
  3. Step 3: Cross multiply
    667,230.67x = 920,780.22 × 361,310.68
  4. Step 4: Simplify right side
    667,230.67x = 332,687,727,418.75
  5. Step 5: Solve for x
    x = 332,687,727,418.75/667,230.67
  6. Step 6: Final answer
    x = 498,609.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.