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Finding the Fourth Proportional to 508,504.55, 762,761.41 and 129,425.69

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Solution

The fourth proportional to 508,504.55, 762,761.41 and 129,425.69 is: 194,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,504.55 : 762,761.41 = 129,425.69 : x
  2. Step 2: Convert to fraction form
    508,504.55/762,761.41 = 129,425.69/x
  3. Step 3: Cross multiply
    508,504.55x = 762,761.41 × 129,425.69
  4. Step 4: Simplify right side
    508,504.55x = 98,720,923,660.66
  5. Step 5: Solve for x
    x = 98,720,923,660.66/508,504.55
  6. Step 6: Final answer
    x = 194,139.70

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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.