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Finding the Third Proportional to 115,742 and 253,720

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Solution

The third proportional to 115,742 and 253,720 is: 556,183.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,742 : 253,720 = 253,720 : x
  2. Step 2: Convert to fraction form
    115,742/253,720 = 253,720/x
  3. Step 3: Cross multiply
    115,742x = 253,720 × 253,720
  4. Step 4: Simplify right side
    115,742x = 64,373,838,400
  5. Step 5: Solve for x
    x = 64,373,838,400/115,742
  6. Step 6: Final answer
    x = 556,183.91

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.