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Finding the Third Proportional to 276,275 and 426,617

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Solution

The third proportional to 276,275 and 426,617 is: 658,771.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,275 : 426,617 = 426,617 : x
  2. Step 2: Convert to fraction form
    276,275/426,617 = 426,617/x
  3. Step 3: Cross multiply
    276,275x = 426,617 × 426,617
  4. Step 4: Simplify right side
    276,275x = 182,002,064,689
  5. Step 5: Solve for x
    x = 182,002,064,689/276,275
  6. Step 6: Final answer
    x = 658,771.39

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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.