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Finding the Third Proportional to 172,078 and 260,707

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Solution

The third proportional to 172,078 and 260,707 is: 394,984.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,078 : 260,707 = 260,707 : x
  2. Step 2: Convert to fraction form
    172,078/260,707 = 260,707/x
  3. Step 3: Cross multiply
    172,078x = 260,707 × 260,707
  4. Step 4: Simplify right side
    172,078x = 67,968,139,849
  5. Step 5: Solve for x
    x = 67,968,139,849/172,078
  6. Step 6: Final answer
    x = 394,984.48

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.