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Finding the Third Proportional to 258,553.50 and 379,310.25

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Solution

The third proportional to 258,553.50 and 379,310.25 is: 556,466.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,553.50 : 379,310.25 = 379,310.25 : x
  2. Step 2: Convert to fraction form
    258,553.50/379,310.25 = 379,310.25/x
  3. Step 3: Cross multiply
    258,553.50x = 379,310.25 × 379,310.25
  4. Step 4: Simplify right side
    258,553.50x = 143,876,265,755.06
  5. Step 5: Solve for x
    x = 143,876,265,755.06/258,553.50
  6. Step 6: Final answer
    x = 556,466.13

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.