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Finding the Third Proportional to 178,459 and 260,974

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Solution

The third proportional to 178,459 and 260,974 is: 381,641.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,459 : 260,974 = 260,974 : x
  2. Step 2: Convert to fraction form
    178,459/260,974 = 260,974/x
  3. Step 3: Cross multiply
    178,459x = 260,974 × 260,974
  4. Step 4: Simplify right side
    178,459x = 68,107,428,676
  5. Step 5: Solve for x
    x = 68,107,428,676/178,459
  6. Step 6: Final answer
    x = 381,641.88

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.