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Finding the Fourth Proportional to 498,399.80, 747,714.18 and 143,416.76

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Solution

The fourth proportional to 498,399.80, 747,714.18 and 143,416.76 is: 215,158.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,399.80 : 747,714.18 = 143,416.76 : x
  2. Step 2: Convert to fraction form
    498,399.80/747,714.18 = 143,416.76/x
  3. Step 3: Cross multiply
    498,399.80x = 747,714.18 × 143,416.76
  4. Step 4: Simplify right side
    498,399.80x = 107,234,745,101.66
  5. Step 5: Solve for x
    x = 107,234,745,101.66/498,399.80
  6. Step 6: Final answer
    x = 215,158.08

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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.