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Finding the Fourth Proportional to 399,286.67, 598,889.70 and 133,018.61

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Solution

The fourth proportional to 399,286.67, 598,889.70 and 133,018.61 is: 199,514.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,286.67 : 598,889.70 = 133,018.61 : x
  2. Step 2: Convert to fraction form
    399,286.67/598,889.70 = 133,018.61/x
  3. Step 3: Cross multiply
    399,286.67x = 598,889.70 × 133,018.61
  4. Step 4: Simplify right side
    399,286.67x = 79,663,472,442.87
  5. Step 5: Solve for x
    x = 79,663,472,442.87/399,286.67
  6. Step 6: Final answer
    x = 199,514.48

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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.