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Finding the Third Proportional to 217,619 and 332,869

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Solution

The third proportional to 217,619 and 332,869 is: 509,154.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,619 : 332,869 = 332,869 : x
  2. Step 2: Convert to fraction form
    217,619/332,869 = 332,869/x
  3. Step 3: Cross multiply
    217,619x = 332,869 × 332,869
  4. Step 4: Simplify right side
    217,619x = 110,801,771,161
  5. Step 5: Solve for x
    x = 110,801,771,161/217,619
  6. Step 6: Final answer
    x = 509,154.86

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.