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Finding the Fourth Proportional to 218,565.20, 327,617.40 and 124,869.20

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Solution

The fourth proportional to 218,565.20, 327,617.40 and 124,869.20 is: 187,172.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,565.20 : 327,617.40 = 124,869.20 : x
  2. Step 2: Convert to fraction form
    218,565.20/327,617.40 = 124,869.20/x
  3. Step 3: Cross multiply
    218,565.20x = 327,617.40 × 124,869.20
  4. Step 4: Simplify right side
    218,565.20x = 40,909,322,644.08
  5. Step 5: Solve for x
    x = 40,909,322,644.08/218,565.20
  6. Step 6: Final answer
    x = 187,172.17

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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.