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Finding the Third Proportional to 129,398 and 274,348

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Solution

The third proportional to 129,398 and 274,348 is: 581,669.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,398 : 274,348 = 274,348 : x
  2. Step 2: Convert to fraction form
    129,398/274,348 = 274,348/x
  3. Step 3: Cross multiply
    129,398x = 274,348 × 274,348
  4. Step 4: Simplify right side
    129,398x = 75,266,825,104
  5. Step 5: Solve for x
    x = 75,266,825,104/129,398
  6. Step 6: Final answer
    x = 581,669.15

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.