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Finding the Fourth Proportional to 311,179.75, 466,770.08 and 86,540.20

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Solution

The fourth proportional to 311,179.75, 466,770.08 and 86,540.20 is: 129,810.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,179.75 : 466,770.08 = 86,540.20 : x
  2. Step 2: Convert to fraction form
    311,179.75/466,770.08 = 86,540.20/x
  3. Step 3: Cross multiply
    311,179.75x = 466,770.08 × 86,540.20
  4. Step 4: Simplify right side
    311,179.75x = 40,394,376,077.22
  5. Step 5: Solve for x
    x = 40,394,376,077.22/311,179.75
  6. Step 6: Final answer
    x = 129,810.43

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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.