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Finding the Fourth Proportional to 508,433.90, 762,655.37 and 129,355.11

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Solution

The fourth proportional to 508,433.90, 762,655.37 and 129,355.11 is: 194,033.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,433.90 : 762,655.37 = 129,355.11 : x
  2. Step 2: Convert to fraction form
    508,433.90/762,655.37 = 129,355.11/x
  3. Step 3: Cross multiply
    508,433.90x = 762,655.37 × 129,355.11
  4. Step 4: Simplify right side
    508,433.90x = 98,653,368,631.67
  5. Step 5: Solve for x
    x = 98,653,368,631.67/508,433.90
  6. Step 6: Final answer
    x = 194,033.82

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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.