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Finding the Fourth Proportional to 242,456.80, 363,685.20 and 137,480.80

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Solution

The fourth proportional to 242,456.80, 363,685.20 and 137,480.80 is: 206,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,456.80 : 363,685.20 = 137,480.80 : x
  2. Step 2: Convert to fraction form
    242,456.80/363,685.20 = 137,480.80/x
  3. Step 3: Cross multiply
    242,456.80x = 363,685.20 × 137,480.80
  4. Step 4: Simplify right side
    242,456.80x = 49,999,732,244.16
  5. Step 5: Solve for x
    x = 49,999,732,244.16/242,456.80
  6. Step 6: Final answer
    x = 206,221.20

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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.