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Finding the Fourth Proportional to 351,480.80, 527,221.20 and 126,875.90

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Solution

The fourth proportional to 351,480.80, 527,221.20 and 126,875.90 is: 190,313.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,480.80 : 527,221.20 = 126,875.90 : x
  2. Step 2: Convert to fraction form
    351,480.80/527,221.20 = 126,875.90/x
  3. Step 3: Cross multiply
    351,480.80x = 527,221.20 × 126,875.90
  4. Step 4: Simplify right side
    351,480.80x = 66,891,664,249.08
  5. Step 5: Solve for x
    x = 66,891,664,249.08/351,480.80
  6. Step 6: Final answer
    x = 190,313.85

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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.