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Finding the Fourth Proportional to 307,857.57, 424,839.39 and 171,893.85

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Solution

The fourth proportional to 307,857.57, 424,839.39 and 171,893.85 is: 237,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,857.57 : 424,839.39 = 171,893.85 : x
  2. Step 2: Convert to fraction form
    307,857.57/424,839.39 = 171,893.85/x
  3. Step 3: Cross multiply
    307,857.57x = 424,839.39 × 171,893.85
  4. Step 4: Simplify right side
    307,857.57x = 73,027,278,378.75
  5. Step 5: Solve for x
    x = 73,027,278,378.75/307,857.57
  6. Step 6: Final answer
    x = 237,211.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.