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Finding the Fourth Proportional to 279,313.97, 385,842.06 and 268,944.39

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Solution

The fourth proportional to 279,313.97, 385,842.06 and 268,944.39 is: 371,517.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,313.97 : 385,842.06 = 268,944.39 : x
  2. Step 2: Convert to fraction form
    279,313.97/385,842.06 = 268,944.39/x
  3. Step 3: Cross multiply
    279,313.97x = 385,842.06 × 268,944.39
  4. Step 4: Simplify right side
    279,313.97x = 103,770,057,463.04
  5. Step 5: Solve for x
    x = 103,770,057,463.04/279,313.97
  6. Step 6: Final answer
    x = 371,517.61

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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.