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Finding the Third Proportional to 115,128 and 248,397

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Solution

The third proportional to 115,128 and 248,397 is: 535,934.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,128 : 248,397 = 248,397 : x
  2. Step 2: Convert to fraction form
    115,128/248,397 = 248,397/x
  3. Step 3: Cross multiply
    115,128x = 248,397 × 248,397
  4. Step 4: Simplify right side
    115,128x = 61,701,069,609
  5. Step 5: Solve for x
    x = 61,701,069,609/115,128
  6. Step 6: Final answer
    x = 535,934.52

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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.