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Finding the Fourth Proportional to 440,359.20, 660,409.20 and 124,843.68

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Solution

The fourth proportional to 440,359.20, 660,409.20 and 124,843.68 is: 187,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,359.20 : 660,409.20 = 124,843.68 : x
  2. Step 2: Convert to fraction form
    440,359.20/660,409.20 = 124,843.68/x
  3. Step 3: Cross multiply
    440,359.20x = 660,409.20 × 124,843.68
  4. Step 4: Simplify right side
    440,359.20x = 82,447,914,833.86
  5. Step 5: Solve for x
    x = 82,447,914,833.86/440,359.20
  6. Step 6: Final answer
    x = 187,228.78

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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.