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Finding the Fourth Proportional to 317,757.56, 476,635.90 and 81,100.24

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Solution

The fourth proportional to 317,757.56, 476,635.90 and 81,100.24 is: 121,650.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,757.56 : 476,635.90 = 81,100.24 : x
  2. Step 2: Convert to fraction form
    317,757.56/476,635.90 = 81,100.24/x
  3. Step 3: Cross multiply
    317,757.56x = 476,635.90 × 81,100.24
  4. Step 4: Simplify right side
    317,757.56x = 38,655,285,882.62
  5. Step 5: Solve for x
    x = 38,655,285,882.62/317,757.56
  6. Step 6: Final answer
    x = 121,650.25

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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.