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Finding the Third Proportional to 198,009 and 262,563.75

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Solution

The third proportional to 198,009 and 262,563.75 is: 348,164.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,009 : 262,563.75 = 262,563.75 : x
  2. Step 2: Convert to fraction form
    198,009/262,563.75 = 262,563.75/x
  3. Step 3: Cross multiply
    198,009x = 262,563.75 × 262,563.75
  4. Step 4: Simplify right side
    198,009x = 68,939,722,814.06
  5. Step 5: Solve for x
    x = 68,939,722,814.06/198,009
  6. Step 6: Final answer
    x = 348,164.59

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.