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Finding the Third Proportional to 118,512 and 257,328

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Solution

The third proportional to 118,512 and 257,328 is: 558,742.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,512 : 257,328 = 257,328 : x
  2. Step 2: Convert to fraction form
    118,512/257,328 = 257,328/x
  3. Step 3: Cross multiply
    118,512x = 257,328 × 257,328
  4. Step 4: Simplify right side
    118,512x = 66,217,699,584
  5. Step 5: Solve for x
    x = 66,217,699,584/118,512
  6. Step 6: Final answer
    x = 558,742.57

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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.