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Finding the Third Proportional to 177,810 and 275,139

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Solution

The third proportional to 177,810 and 275,139 is: 425,743.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,810 : 275,139 = 275,139 : x
  2. Step 2: Convert to fraction form
    177,810/275,139 = 275,139/x
  3. Step 3: Cross multiply
    177,810x = 275,139 × 275,139
  4. Step 4: Simplify right side
    177,810x = 75,701,469,321
  5. Step 5: Solve for x
    x = 75,701,469,321/177,810
  6. Step 6: Final answer
    x = 425,743.60

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.