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Finding the Fourth Proportional to 327,859, 491,496.73 and 128,133.97

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Solution

The fourth proportional to 327,859, 491,496.73 and 128,133.97 is: 192,086.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,859 : 491,496.73 = 128,133.97 : x
  2. Step 2: Convert to fraction form
    327,859/491,496.73 = 128,133.97/x
  3. Step 3: Cross multiply
    327,859x = 491,496.73 × 128,133.97
  4. Step 4: Simplify right side
    327,859x = 62,977,427,256.92
  5. Step 5: Solve for x
    x = 62,977,427,256.92/327,859
  6. Step 6: Final answer
    x = 192,086.93

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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.