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Finding the Third Proportional to 218,739 and 477,006

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Solution

The third proportional to 218,739 and 477,006 is: 1,040,211.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,739 : 477,006 = 477,006 : x
  2. Step 2: Convert to fraction form
    218,739/477,006 = 477,006/x
  3. Step 3: Cross multiply
    218,739x = 477,006 × 477,006
  4. Step 4: Simplify right side
    218,739x = 227,534,724,036
  5. Step 5: Solve for x
    x = 227,534,724,036/218,739
  6. Step 6: Final answer
    x = 1,040,211.05

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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.