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Finding the Fourth Proportional to 440,346.31, 660,781.90 and 159,885.43

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Solution

The fourth proportional to 440,346.31, 660,781.90 and 159,885.43 is: 239,923.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,346.31 : 660,781.90 = 159,885.43 : x
  2. Step 2: Convert to fraction form
    440,346.31/660,781.90 = 159,885.43/x
  3. Step 3: Cross multiply
    440,346.31x = 660,781.90 × 159,885.43
  4. Step 4: Simplify right side
    440,346.31x = 105,649,396,765.62
  5. Step 5: Solve for x
    x = 105,649,396,765.62/440,346.31
  6. Step 6: Final answer
    x = 239,923.43

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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.