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Finding the Fourth Proportional to 327,858, 491,495.23 and 128,132.97

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Solution

The fourth proportional to 327,858, 491,495.23 and 128,132.97 is: 192,085.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,858 : 491,495.23 = 128,132.97 : x
  2. Step 2: Convert to fraction form
    327,858/491,495.23 = 128,132.97/x
  3. Step 3: Cross multiply
    327,858x = 491,495.23 × 128,132.97
  4. Step 4: Simplify right side
    327,858x = 62,976,743,560.73
  5. Step 5: Solve for x
    x = 62,976,743,560.73/327,858
  6. Step 6: Final answer
    x = 192,085.43

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1.5x scale

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.