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Finding the Third Proportional to 153,189 and 324,042

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Solution

The third proportional to 153,189 and 324,042 is: 685,448.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,189 : 324,042 = 324,042 : x
  2. Step 2: Convert to fraction form
    153,189/324,042 = 324,042/x
  3. Step 3: Cross multiply
    153,189x = 324,042 × 324,042
  4. Step 4: Simplify right side
    153,189x = 105,003,217,764
  5. Step 5: Solve for x
    x = 105,003,217,764/153,189
  6. Step 6: Final answer
    x = 685,448.81

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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.