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Finding the Fourth Proportional to 307,930.16, 424,850.80 and 178,843.76

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Solution

The fourth proportional to 307,930.16, 424,850.80 and 178,843.76 is: 246,750.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,930.16 : 424,850.80 = 178,843.76 : x
  2. Step 2: Convert to fraction form
    307,930.16/424,850.80 = 178,843.76/x
  3. Step 3: Cross multiply
    307,930.16x = 424,850.80 × 178,843.76
  4. Step 4: Simplify right side
    307,930.16x = 75,981,914,511.01
  5. Step 5: Solve for x
    x = 75,981,914,511.01/307,930.16
  6. Step 6: Final answer
    x = 246,750.48

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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.