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Finding the Third Proportional to 179,900 and 387,487

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Solution

The third proportional to 179,900 and 387,487 is: 834,609.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,900 : 387,487 = 387,487 : x
  2. Step 2: Convert to fraction form
    179,900/387,487 = 387,487/x
  3. Step 3: Cross multiply
    179,900x = 387,487 × 387,487
  4. Step 4: Simplify right side
    179,900x = 150,146,175,169
  5. Step 5: Solve for x
    x = 150,146,175,169/179,900
  6. Step 6: Final answer
    x = 834,609.09

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.