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Finding the Fourth Proportional to 202,112.30, 303,824.55 and 143,354.90

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Solution

The fourth proportional to 202,112.30, 303,824.55 and 143,354.90 is: 215,497.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,112.30 : 303,824.55 = 143,354.90 : x
  2. Step 2: Convert to fraction form
    202,112.30/303,824.55 = 143,354.90/x
  3. Step 3: Cross multiply
    202,112.30x = 303,824.55 × 143,354.90
  4. Step 4: Simplify right side
    202,112.30x = 43,554,737,982.80
  5. Step 5: Solve for x
    x = 43,554,737,982.80/202,112.30
  6. Step 6: Final answer
    x = 215,497.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.