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Finding the Third Proportional to 302,638.50 and 655,375.50

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Solution

The third proportional to 302,638.50 and 655,375.50 is: 1,419,241.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,638.50 : 655,375.50 = 655,375.50 : x
  2. Step 2: Convert to fraction form
    302,638.50/655,375.50 = 655,375.50/x
  3. Step 3: Cross multiply
    302,638.50x = 655,375.50 × 655,375.50
  4. Step 4: Simplify right side
    302,638.50x = 429,517,046,000.25
  5. Step 5: Solve for x
    x = 429,517,046,000.25/302,638.50
  6. Step 6: Final answer
    x = 1,419,241.26

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.