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Finding the Third Proportional to 179,390 and 380,644

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Solution

The third proportional to 179,390 and 380,644 is: 807,680.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,390 : 380,644 = 380,644 : x
  2. Step 2: Convert to fraction form
    179,390/380,644 = 380,644/x
  3. Step 3: Cross multiply
    179,390x = 380,644 × 380,644
  4. Step 4: Simplify right side
    179,390x = 144,889,854,736
  5. Step 5: Solve for x
    x = 144,889,854,736/179,390
  6. Step 6: Final answer
    x = 807,680.78

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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.