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Finding the Fourth Proportional to 424,761.68, 637,234.68 and 129,266

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Solution

The fourth proportional to 424,761.68, 637,234.68 and 129,266 is: 193,927.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,761.68 : 637,234.68 = 129,266 : x
  2. Step 2: Convert to fraction form
    424,761.68/637,234.68 = 129,266/x
  3. Step 3: Cross multiply
    424,761.68x = 637,234.68 × 129,266
  4. Step 4: Simplify right side
    424,761.68x = 82,372,778,144.88
  5. Step 5: Solve for x
    x = 82,372,778,144.88/424,761.68
  6. Step 6: Final answer
    x = 193,927.05

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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.