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Finding the Fourth Proportional to 311,425.73, 429,767.49 and 168,185.76

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Solution

The fourth proportional to 311,425.73, 429,767.49 and 168,185.76 is: 232,096.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,425.73 : 429,767.49 = 168,185.76 : x
  2. Step 2: Convert to fraction form
    311,425.73/429,767.49 = 168,185.76/x
  3. Step 3: Cross multiply
    311,425.73x = 429,767.49 × 168,185.76
  4. Step 4: Simplify right side
    311,425.73x = 72,280,770,001.97
  5. Step 5: Solve for x
    x = 72,280,770,001.97/311,425.73
  6. Step 6: Final answer
    x = 232,096.33

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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.