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Finding the Third Proportional to 118,372 and 256,432

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Solution

The third proportional to 118,372 and 256,432 is: 555,514.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,372 : 256,432 = 256,432 : x
  2. Step 2: Convert to fraction form
    118,372/256,432 = 256,432/x
  3. Step 3: Cross multiply
    118,372x = 256,432 × 256,432
  4. Step 4: Simplify right side
    118,372x = 65,757,370,624
  5. Step 5: Solve for x
    x = 65,757,370,624/118,372
  6. Step 6: Final answer
    x = 555,514.57

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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.