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Finding the Third Proportional to 179,966 and 393,831

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Solution

The third proportional to 179,966 and 393,831 is: 861,845.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,966 : 393,831 = 393,831 : x
  2. Step 2: Convert to fraction form
    179,966/393,831 = 393,831/x
  3. Step 3: Cross multiply
    179,966x = 393,831 × 393,831
  4. Step 4: Simplify right side
    179,966x = 155,102,856,561
  5. Step 5: Solve for x
    x = 155,102,856,561/179,966
  6. Step 6: Final answer
    x = 861,845.33

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.