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Finding the Third Proportional to 273,458 and 419,763

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Solution

The third proportional to 273,458 and 419,763 is: 644,343.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,458 : 419,763 = 419,763 : x
  2. Step 2: Convert to fraction form
    273,458/419,763 = 419,763/x
  3. Step 3: Cross multiply
    273,458x = 419,763 × 419,763
  4. Step 4: Simplify right side
    273,458x = 176,200,976,169
  5. Step 5: Solve for x
    x = 176,200,976,169/273,458
  6. Step 6: Final answer
    x = 644,343.83

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.