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Finding the Third Proportional to 177,782 and 387,520

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Solution

The third proportional to 177,782 and 387,520 is: 844,696.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,782 : 387,520 = 387,520 : x
  2. Step 2: Convert to fraction form
    177,782/387,520 = 387,520/x
  3. Step 3: Cross multiply
    177,782x = 387,520 × 387,520
  4. Step 4: Simplify right side
    177,782x = 150,171,750,400
  5. Step 5: Solve for x
    x = 150,171,750,400/177,782
  6. Step 6: Final answer
    x = 844,696.03

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.