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Finding the Third Proportional to 275,205 and 387,549

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Solution

The third proportional to 275,205 and 387,549 is: 545,753.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,205 : 387,549 = 387,549 : x
  2. Step 2: Convert to fraction form
    275,205/387,549 = 387,549/x
  3. Step 3: Cross multiply
    275,205x = 387,549 × 387,549
  4. Step 4: Simplify right side
    275,205x = 150,194,227,401
  5. Step 5: Solve for x
    x = 150,194,227,401/275,205
  6. Step 6: Final answer
    x = 545,753.99

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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.