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Finding the Third Proportional to 258,314 and 558,126

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Solution

The third proportional to 258,314 and 558,126 is: 1,205,914.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,314 : 558,126 = 558,126 : x
  2. Step 2: Convert to fraction form
    258,314/558,126 = 558,126/x
  3. Step 3: Cross multiply
    258,314x = 558,126 × 558,126
  4. Step 4: Simplify right side
    258,314x = 311,504,631,876
  5. Step 5: Solve for x
    x = 311,504,631,876/258,314
  6. Step 6: Final answer
    x = 1,205,914.63

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.