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Finding the Third Proportional to 118,380 and 256,448

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Solution

The third proportional to 118,380 and 256,448 is: 555,546.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,380 : 256,448 = 256,448 : x
  2. Step 2: Convert to fraction form
    118,380/256,448 = 256,448/x
  3. Step 3: Cross multiply
    118,380x = 256,448 × 256,448
  4. Step 4: Simplify right side
    118,380x = 65,765,576,704
  5. Step 5: Solve for x
    x = 65,765,576,704/118,380
  6. Step 6: Final answer
    x = 555,546.35

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.