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Finding the Fourth Proportional to 268,978.32, 371,191.14 and 161,550.18

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Solution

The fourth proportional to 268,978.32, 371,191.14 and 161,550.18 is: 222,939.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,978.32 : 371,191.14 = 161,550.18 : x
  2. Step 2: Convert to fraction form
    268,978.32/371,191.14 = 161,550.18/x
  3. Step 3: Cross multiply
    268,978.32x = 371,191.14 × 161,550.18
  4. Step 4: Simplify right side
    268,978.32x = 59,965,995,481.41
  5. Step 5: Solve for x
    x = 59,965,995,481.41/268,978.32
  6. Step 6: Final answer
    x = 222,939.88

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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.