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Finding the Fourth Proportional to 508,419.22, 762,633.18 and 129,340.30

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Solution

The fourth proportional to 508,419.22, 762,633.18 and 129,340.30 is: 194,011.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,419.22 : 762,633.18 = 129,340.30 : x
  2. Step 2: Convert to fraction form
    508,419.22/762,633.18 = 129,340.30/x
  3. Step 3: Cross multiply
    508,419.22x = 762,633.18 × 129,340.30
  4. Step 4: Simplify right side
    508,419.22x = 98,639,204,291.15
  5. Step 5: Solve for x
    x = 98,639,204,291.15/508,419.22
  6. Step 6: Final answer
    x = 194,011.56

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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.