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Finding the Fourth Proportional to 327,608.82, 491,358.42 and 90,975.42

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Solution

The fourth proportional to 327,608.82, 491,358.42 and 90,975.42 is: 136,447.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,608.82 : 491,358.42 = 90,975.42 : x
  2. Step 2: Convert to fraction form
    327,608.82/491,358.42 = 90,975.42/x
  3. Step 3: Cross multiply
    327,608.82x = 491,358.42 × 90,975.42
  4. Step 4: Simplify right side
    327,608.82x = 44,701,538,630.04
  5. Step 5: Solve for x
    x = 44,701,538,630.04/327,608.82
  6. Step 6: Final answer
    x = 136,447.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.