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Finding the Third Proportional to 258,301 and 557,378

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Solution

The third proportional to 258,301 and 557,378 is: 1,202,744.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,301 : 557,378 = 557,378 : x
  2. Step 2: Convert to fraction form
    258,301/557,378 = 557,378/x
  3. Step 3: Cross multiply
    258,301x = 557,378 × 557,378
  4. Step 4: Simplify right side
    258,301x = 310,670,234,884
  5. Step 5: Solve for x
    x = 310,670,234,884/258,301
  6. Step 6: Final answer
    x = 1,202,744.99

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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.