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Finding the Third Proportional to 276,313.25 and 439,379

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Solution

The third proportional to 276,313.25 and 439,379 is: 698,677.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,313.25 : 439,379 = 439,379 : x
  2. Step 2: Convert to fraction form
    276,313.25/439,379 = 439,379/x
  3. Step 3: Cross multiply
    276,313.25x = 439,379 × 439,379
  4. Step 4: Simplify right side
    276,313.25x = 193,053,905,641
  5. Step 5: Solve for x
    x = 193,053,905,641/276,313.25
  6. Step 6: Final answer
    x = 698,677.70

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.