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Finding the Third Proportional to 201,243.25 and 419,021.50

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Solution

The third proportional to 201,243.25 and 419,021.50 is: 872,471.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,243.25 : 419,021.50 = 419,021.50 : x
  2. Step 2: Convert to fraction form
    201,243.25/419,021.50 = 419,021.50/x
  3. Step 3: Cross multiply
    201,243.25x = 419,021.50 × 419,021.50
  4. Step 4: Simplify right side
    201,243.25x = 175,579,017,462.25
  5. Step 5: Solve for x
    x = 175,579,017,462.25/201,243.25
  6. Step 6: Final answer
    x = 872,471.59

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.