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Finding the Third Proportional to 192,212 and 408,072

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Solution

The third proportional to 192,212 and 408,072 is: 866,349.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,212 : 408,072 = 408,072 : x
  2. Step 2: Convert to fraction form
    192,212/408,072 = 408,072/x
  3. Step 3: Cross multiply
    192,212x = 408,072 × 408,072
  4. Step 4: Simplify right side
    192,212x = 166,522,757,184
  5. Step 5: Solve for x
    x = 166,522,757,184/192,212
  6. Step 6: Final answer
    x = 866,349.43

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.