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Finding the Fourth Proportional to 202,452.80, 303,236.34 and 131,127.44

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Solution

The fourth proportional to 202,452.80, 303,236.34 and 131,127.44 is: 196,404.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,452.80 : 303,236.34 = 131,127.44 : x
  2. Step 2: Convert to fraction form
    202,452.80/303,236.34 = 131,127.44/x
  3. Step 3: Cross multiply
    202,452.80x = 303,236.34 × 131,127.44
  4. Step 4: Simplify right side
    202,452.80x = 39,762,604,979.17
  5. Step 5: Solve for x
    x = 39,762,604,979.17/202,452.80
  6. Step 6: Final answer
    x = 196,404.32

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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.