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Finding the Fourth Proportional to 307,843.56, 424,819.97 and 171,879.59

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Solution

The fourth proportional to 307,843.56, 424,819.97 and 171,879.59 is: 237,191.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,843.56 : 424,819.97 = 171,879.59 : x
  2. Step 2: Convert to fraction form
    307,843.56/424,819.97 = 171,879.59/x
  3. Step 3: Cross multiply
    307,843.56x = 424,819.97 × 171,879.59
  4. Step 4: Simplify right side
    307,843.56x = 73,017,879,283.91
  5. Step 5: Solve for x
    x = 73,017,879,283.91/307,843.56
  6. Step 6: Final answer
    x = 237,191.51

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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.