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Finding the Third Proportional to 258,358.50 and 379,883.25

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Solution

The third proportional to 258,358.50 and 379,883.25 is: 558,569.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,358.50 : 379,883.25 = 379,883.25 : x
  2. Step 2: Convert to fraction form
    258,358.50/379,883.25 = 379,883.25/x
  3. Step 3: Cross multiply
    258,358.50x = 379,883.25 × 379,883.25
  4. Step 4: Simplify right side
    258,358.50x = 144,311,283,630.56
  5. Step 5: Solve for x
    x = 144,311,283,630.56/258,358.50
  6. Step 6: Final answer
    x = 558,569.91

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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.