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Finding the Third Proportional to 135,239 and 288,571

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Solution

The third proportional to 135,239 and 288,571 is: 615,748.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,239 : 288,571 = 288,571 : x
  2. Step 2: Convert to fraction form
    135,239/288,571 = 288,571/x
  3. Step 3: Cross multiply
    135,239x = 288,571 × 288,571
  4. Step 4: Simplify right side
    135,239x = 83,273,222,041
  5. Step 5: Solve for x
    x = 83,273,222,041/135,239
  6. Step 6: Final answer
    x = 615,748.58

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.