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Finding the Fourth Proportional to 321,963.12, 444,286.88 and 178,711.88

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Solution

The fourth proportional to 321,963.12, 444,286.88 and 178,711.88 is: 246,610.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,963.12 : 444,286.88 = 178,711.88 : x
  2. Step 2: Convert to fraction form
    321,963.12/444,286.88 = 178,711.88/x
  3. Step 3: Cross multiply
    321,963.12x = 444,286.88 × 178,711.88
  4. Step 4: Simplify right side
    321,963.12x = 79,399,343,801.29
  5. Step 5: Solve for x
    x = 79,399,343,801.29/321,963.12
  6. Step 6: Final answer
    x = 246,610.06

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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.