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Finding the Third Proportional to 179,739 and 258,916.50

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Solution

The third proportional to 179,739 and 258,916.50 is: 372,972.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,739 : 258,916.50 = 258,916.50 : x
  2. Step 2: Convert to fraction form
    179,739/258,916.50 = 258,916.50/x
  3. Step 3: Cross multiply
    179,739x = 258,916.50 × 258,916.50
  4. Step 4: Simplify right side
    179,739x = 67,037,753,972.25
  5. Step 5: Solve for x
    x = 67,037,753,972.25/179,739
  6. Step 6: Final answer
    x = 372,972.78

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.