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Finding the Third Proportional to 135,272 and 289,304

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Solution

The third proportional to 135,272 and 289,304 is: 618,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,272 : 289,304 = 289,304 : x
  2. Step 2: Convert to fraction form
    135,272/289,304 = 289,304/x
  3. Step 3: Cross multiply
    135,272x = 289,304 × 289,304
  4. Step 4: Simplify right side
    135,272x = 83,696,804,416
  5. Step 5: Solve for x
    x = 83,696,804,416/135,272
  6. Step 6: Final answer
    x = 618,729.70

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.