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Finding the Third Proportional to 168,188 and 257,208

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Solution

The third proportional to 168,188 and 257,208 is: 393,345.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,188 : 257,208 = 257,208 : x
  2. Step 2: Convert to fraction form
    168,188/257,208 = 257,208/x
  3. Step 3: Cross multiply
    168,188x = 257,208 × 257,208
  4. Step 4: Simplify right side
    168,188x = 66,155,955,264
  5. Step 5: Solve for x
    x = 66,155,955,264/168,188
  6. Step 6: Final answer
    x = 393,345.28

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.