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Finding the Third Proportional to 273,142.88 and 428,481

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Solution

The third proportional to 273,142.88 and 428,481 is: 672,160.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,142.88 : 428,481 = 428,481 : x
  2. Step 2: Convert to fraction form
    273,142.88/428,481 = 428,481/x
  3. Step 3: Cross multiply
    273,142.88x = 428,481 × 428,481
  4. Step 4: Simplify right side
    273,142.88x = 183,595,967,361
  5. Step 5: Solve for x
    x = 183,595,967,361/273,142.88
  6. Step 6: Final answer
    x = 672,160.92

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.