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Finding the Fourth Proportional to 508,551.01, 762,814.21 and 129,472.56

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Solution

The fourth proportional to 508,551.01, 762,814.21 and 129,472.56 is: 194,205.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,551.01 : 762,814.21 = 129,472.56 : x
  2. Step 2: Convert to fraction form
    508,551.01/762,814.21 = 129,472.56/x
  3. Step 3: Cross multiply
    508,551.01x = 762,814.21 × 129,472.56
  4. Step 4: Simplify right side
    508,551.01x = 98,763,511,710.28
  5. Step 5: Solve for x
    x = 98,763,511,710.28/508,551.01
  6. Step 6: Final answer
    x = 194,205.71

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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.