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Finding the Third Proportional to 203,478 and 425,543

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Solution

The third proportional to 203,478 and 425,543 is: 889,957.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,478 : 425,543 = 425,543 : x
  2. Step 2: Convert to fraction form
    203,478/425,543 = 425,543/x
  3. Step 3: Cross multiply
    203,478x = 425,543 × 425,543
  4. Step 4: Simplify right side
    203,478x = 181,086,844,849
  5. Step 5: Solve for x
    x = 181,086,844,849/203,478
  6. Step 6: Final answer
    x = 889,957.86

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.