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Finding the Fourth Proportional to 440,395.20, 660,463.20 and 124,879.68

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Solution

The fourth proportional to 440,395.20, 660,463.20 and 124,879.68 is: 187,282.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,395.20 : 660,463.20 = 124,879.68 : x
  2. Step 2: Convert to fraction form
    440,395.20/660,463.20 = 124,879.68/x
  3. Step 3: Cross multiply
    440,395.20x = 660,463.20 × 124,879.68
  4. Step 4: Simplify right side
    440,395.20x = 82,478,433,067.78
  5. Step 5: Solve for x
    x = 82,478,433,067.78/440,395.20
  6. Step 6: Final answer
    x = 187,282.77

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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.