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Finding the Third Proportional to 187,670 and 276,540

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Solution

The third proportional to 187,670 and 276,540 is: 407,493.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,670 : 276,540 = 276,540 : x
  2. Step 2: Convert to fraction form
    187,670/276,540 = 276,540/x
  3. Step 3: Cross multiply
    187,670x = 276,540 × 276,540
  4. Step 4: Simplify right side
    187,670x = 76,474,371,600
  5. Step 5: Solve for x
    x = 76,474,371,600/187,670
  6. Step 6: Final answer
    x = 407,493.85

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.