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Finding the Third Proportional to 195,519 and 428,400

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Solution

The third proportional to 195,519 and 428,400 is: 938,663.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,519 : 428,400 = 428,400 : x
  2. Step 2: Convert to fraction form
    195,519/428,400 = 428,400/x
  3. Step 3: Cross multiply
    195,519x = 428,400 × 428,400
  4. Step 4: Simplify right side
    195,519x = 183,526,560,000
  5. Step 5: Solve for x
    x = 183,526,560,000/195,519
  6. Step 6: Final answer
    x = 938,663.56

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.