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Finding the Third Proportional to 132,315 and 290,874

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Solution

The third proportional to 132,315 and 290,874 is: 639,441.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,315 : 290,874 = 290,874 : x
  2. Step 2: Convert to fraction form
    132,315/290,874 = 290,874/x
  3. Step 3: Cross multiply
    132,315x = 290,874 × 290,874
  4. Step 4: Simplify right side
    132,315x = 84,607,683,876
  5. Step 5: Solve for x
    x = 84,607,683,876/132,315
  6. Step 6: Final answer
    x = 639,441.36

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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.