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Finding the Third Proportional to 210,669 and 444,990

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Solution

The third proportional to 210,669 and 444,990 is: 939,939.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,669 : 444,990 = 444,990 : x
  2. Step 2: Convert to fraction form
    210,669/444,990 = 444,990/x
  3. Step 3: Cross multiply
    210,669x = 444,990 × 444,990
  4. Step 4: Simplify right side
    210,669x = 198,016,100,100
  5. Step 5: Solve for x
    x = 198,016,100,100/210,669
  6. Step 6: Final answer
    x = 939,939.43

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.