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Finding the Third Proportional to 177,385 and 394,137

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Solution

The third proportional to 177,385 and 394,137 is: 875,744.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,385 : 394,137 = 394,137 : x
  2. Step 2: Convert to fraction form
    177,385/394,137 = 394,137/x
  3. Step 3: Cross multiply
    177,385x = 394,137 × 394,137
  4. Step 4: Simplify right side
    177,385x = 155,343,974,769
  5. Step 5: Solve for x
    x = 155,343,974,769/177,385
  6. Step 6: Final answer
    x = 875,744.71

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.