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Finding the Third Proportional to 132,220 and 290,683

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Solution

The third proportional to 132,220 and 290,683 is: 639,060.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,220 : 290,683 = 290,683 : x
  2. Step 2: Convert to fraction form
    132,220/290,683 = 290,683/x
  3. Step 3: Cross multiply
    132,220x = 290,683 × 290,683
  4. Step 4: Simplify right side
    132,220x = 84,496,606,489
  5. Step 5: Solve for x
    x = 84,496,606,489/132,220
  6. Step 6: Final answer
    x = 639,060.71

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.