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Finding the Fourth Proportional to 317,757.40, 476,635.74 and 81,100.12

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Solution

The fourth proportional to 317,757.40, 476,635.74 and 81,100.12 is: 121,650.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,757.40 : 476,635.74 = 81,100.12 : x
  2. Step 2: Convert to fraction form
    317,757.40/476,635.74 = 81,100.12/x
  3. Step 3: Cross multiply
    317,757.40x = 476,635.74 × 81,100.12
  4. Step 4: Simplify right side
    317,757.40x = 38,655,215,710.29
  5. Step 5: Solve for x
    x = 38,655,215,710.29/317,757.40
  6. Step 6: Final answer
    x = 121,650.09

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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.