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Finding the Fourth Proportional to 399,291.50, 551,034.32 and 227,234.15

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Solution

The fourth proportional to 399,291.50, 551,034.32 and 227,234.15 is: 313,589.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,291.50 : 551,034.32 = 227,234.15 : x
  2. Step 2: Convert to fraction form
    399,291.50/551,034.32 = 227,234.15/x
  3. Step 3: Cross multiply
    399,291.50x = 551,034.32 × 227,234.15
  4. Step 4: Simplify right side
    399,291.50x = 125,213,813,138.94
  5. Step 5: Solve for x
    x = 125,213,813,138.94/399,291.50
  6. Step 6: Final answer
    x = 313,589.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.