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Finding the Fourth Proportional to 520,201.20, 780,301.80 and 165,251.10

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Solution

The fourth proportional to 520,201.20, 780,301.80 and 165,251.10 is: 247,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,201.20 : 780,301.80 = 165,251.10 : x
  2. Step 2: Convert to fraction form
    520,201.20/780,301.80 = 165,251.10/x
  3. Step 3: Cross multiply
    520,201.20x = 780,301.80 × 165,251.10
  4. Step 4: Simplify right side
    520,201.20x = 128,945,730,781.98
  5. Step 5: Solve for x
    x = 128,945,730,781.98/520,201.20
  6. Step 6: Final answer
    x = 247,876.65

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Similar ratio
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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.