Home / 327,422.72-491,140.80-102,778.56

Finding the Fourth Proportional to 327,422.72, 491,140.80 and 102,778.56

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Solution

The fourth proportional to 327,422.72, 491,140.80 and 102,778.56 is: 154,169.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,422.72 : 491,140.80 = 102,778.56 : x
  2. Step 2: Convert to fraction form
    327,422.72/491,140.80 = 102,778.56/x
  3. Step 3: Cross multiply
    327,422.72x = 491,140.80 × 102,778.56
  4. Step 4: Simplify right side
    327,422.72x = 50,478,744,181.25
  5. Step 5: Solve for x
    x = 50,478,744,181.25/327,422.72
  6. Step 6: Final answer
    x = 154,169.95

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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.