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Finding the Fourth Proportional to 520,820.10, 781,230.15 and 254,751.30

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Solution

The fourth proportional to 520,820.10, 781,230.15 and 254,751.30 is: 382,126.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,820.10 : 781,230.15 = 254,751.30 : x
  2. Step 2: Convert to fraction form
    520,820.10/781,230.15 = 254,751.30/x
  3. Step 3: Cross multiply
    520,820.10x = 781,230.15 × 254,751.30
  4. Step 4: Simplify right side
    520,820.10x = 199,019,396,311.70
  5. Step 5: Solve for x
    x = 199,019,396,311.70/520,820.10
  6. Step 6: Final answer
    x = 382,126.95

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Similar ratio
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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.