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Finding the Third Proportional to 129,410 and 274,370

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Solution

The third proportional to 129,410 and 274,370 is: 581,708.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,410 : 274,370 = 274,370 : x
  2. Step 2: Convert to fraction form
    129,410/274,370 = 274,370/x
  3. Step 3: Cross multiply
    129,410x = 274,370 × 274,370
  4. Step 4: Simplify right side
    129,410x = 75,278,896,900
  5. Step 5: Solve for x
    x = 75,278,896,900/129,410
  6. Step 6: Final answer
    x = 581,708.50

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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.