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Finding the Fourth Proportional to 220,872.40, 331,654.20 and 127,560.40

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Solution

The fourth proportional to 220,872.40, 331,654.20 and 127,560.40 is: 191,540.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,872.40 : 331,654.20 = 127,560.40 : x
  2. Step 2: Convert to fraction form
    220,872.40/331,654.20 = 127,560.40/x
  3. Step 3: Cross multiply
    220,872.40x = 331,654.20 × 127,560.40
  4. Step 4: Simplify right side
    220,872.40x = 42,305,942,413.68
  5. Step 5: Solve for x
    x = 42,305,942,413.68/220,872.40
  6. Step 6: Final answer
    x = 191,540.19

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1.5x scale

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.