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Finding the Third Proportional to 135,564 and 207,378

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Solution

The third proportional to 135,564 and 207,378 is: 317,234.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,564 : 207,378 = 207,378 : x
  2. Step 2: Convert to fraction form
    135,564/207,378 = 207,378/x
  3. Step 3: Cross multiply
    135,564x = 207,378 × 207,378
  4. Step 4: Simplify right side
    135,564x = 43,005,634,884
  5. Step 5: Solve for x
    x = 43,005,634,884/135,564
  6. Step 6: Final answer
    x = 317,234.92

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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.