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Finding the Third Proportional to 172,239 and 253,255

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Solution

The third proportional to 172,239 and 253,255 is: 372,378.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,239 : 253,255 = 253,255 : x
  2. Step 2: Convert to fraction form
    172,239/253,255 = 253,255/x
  3. Step 3: Cross multiply
    172,239x = 253,255 × 253,255
  4. Step 4: Simplify right side
    172,239x = 64,138,095,025
  5. Step 5: Solve for x
    x = 64,138,095,025/172,239
  6. Step 6: Final answer
    x = 372,378.47

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.