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Finding the Fourth Proportional to 399,243.76, 550,923.29 and 227,115.92

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Solution

The fourth proportional to 399,243.76, 550,923.29 and 227,115.92 is: 313,401.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,243.76 : 550,923.29 = 227,115.92 : x
  2. Step 2: Convert to fraction form
    399,243.76/550,923.29 = 227,115.92/x
  3. Step 3: Cross multiply
    399,243.76x = 550,923.29 × 227,115.92
  4. Step 4: Simplify right side
    399,243.76x = 125,123,450,951.19
  5. Step 5: Solve for x
    x = 125,123,450,951.19/399,243.76
  6. Step 6: Final answer
    x = 313,401.15

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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.