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Finding the Third Proportional to 131,258 and 203,638

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Solution

The third proportional to 131,258 and 203,638 is: 315,930.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,258 : 203,638 = 203,638 : x
  2. Step 2: Convert to fraction form
    131,258/203,638 = 203,638/x
  3. Step 3: Cross multiply
    131,258x = 203,638 × 203,638
  4. Step 4: Simplify right side
    131,258x = 41,468,435,044
  5. Step 5: Solve for x
    x = 41,468,435,044/131,258
  6. Step 6: Final answer
    x = 315,930.72

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.