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Finding the Fourth Proportional to 218,027.20, 300,824.80 and 127,331.68

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Solution

The fourth proportional to 218,027.20, 300,824.80 and 127,331.68 is: 175,686.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,027.20 : 300,824.80 = 127,331.68 : x
  2. Step 2: Convert to fraction form
    218,027.20/300,824.80 = 127,331.68/x
  3. Step 3: Cross multiply
    218,027.20x = 300,824.80 × 127,331.68
  4. Step 4: Simplify right side
    218,027.20x = 38,304,527,169.66
  5. Step 5: Solve for x
    x = 38,304,527,169.66/218,027.20
  6. Step 6: Final answer
    x = 175,686.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.