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Finding the Third Proportional to 275,320 and 387,718

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Solution

The third proportional to 275,320 and 387,718 is: 546,001.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,320 : 387,718 = 387,718 : x
  2. Step 2: Convert to fraction form
    275,320/387,718 = 387,718/x
  3. Step 3: Cross multiply
    275,320x = 387,718 × 387,718
  4. Step 4: Simplify right side
    275,320x = 150,325,247,524
  5. Step 5: Solve for x
    x = 150,325,247,524/275,320
  6. Step 6: Final answer
    x = 546,001.92

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.