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Finding the Third Proportional to 126,400 and 273,072

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Solution

The third proportional to 126,400 and 273,072 is: 589,939.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,400 : 273,072 = 273,072 : x
  2. Step 2: Convert to fraction form
    126,400/273,072 = 273,072/x
  3. Step 3: Cross multiply
    126,400x = 273,072 × 273,072
  4. Step 4: Simplify right side
    126,400x = 74,568,317,184
  5. Step 5: Solve for x
    x = 74,568,317,184/126,400
  6. Step 6: Final answer
    x = 589,939.22

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.