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Finding the Third Proportional to 129,710 and 276,160

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Solution

The third proportional to 129,710 and 276,160 is: 587,960.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,710 : 276,160 = 276,160 : x
  2. Step 2: Convert to fraction form
    129,710/276,160 = 276,160/x
  3. Step 3: Cross multiply
    129,710x = 276,160 × 276,160
  4. Step 4: Simplify right side
    129,710x = 76,264,345,600
  5. Step 5: Solve for x
    x = 76,264,345,600/129,710
  6. Step 6: Final answer
    x = 587,960.42

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.