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Finding the Third Proportional to 179,621 and 391,226

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Solution

The third proportional to 179,621 and 391,226 is: 852,115.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,621 : 391,226 = 391,226 : x
  2. Step 2: Convert to fraction form
    179,621/391,226 = 391,226/x
  3. Step 3: Cross multiply
    179,621x = 391,226 × 391,226
  4. Step 4: Simplify right side
    179,621x = 153,057,783,076
  5. Step 5: Solve for x
    x = 153,057,783,076/179,621
  6. Step 6: Final answer
    x = 852,115.19

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.