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Finding the Third Proportional to 225,704 and 342,990

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Solution

The third proportional to 225,704 and 342,990 is: 521,223.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,704 : 342,990 = 342,990 : x
  2. Step 2: Convert to fraction form
    225,704/342,990 = 342,990/x
  3. Step 3: Cross multiply
    225,704x = 342,990 × 342,990
  4. Step 4: Simplify right side
    225,704x = 117,642,140,100
  5. Step 5: Solve for x
    x = 117,642,140,100/225,704
  6. Step 6: Final answer
    x = 521,223.11

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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.