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Finding the Fourth Proportional to 311,930.91, 467,896.26 and 122,480.55

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Solution

The fourth proportional to 311,930.91, 467,896.26 and 122,480.55 is: 183,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,930.91 : 467,896.26 = 122,480.55 : x
  2. Step 2: Convert to fraction form
    311,930.91/467,896.26 = 122,480.55/x
  3. Step 3: Cross multiply
    311,930.91x = 467,896.26 × 122,480.55
  4. Step 4: Simplify right side
    311,930.91x = 57,308,191,267.74
  5. Step 5: Solve for x
    x = 57,308,191,267.74/311,930.91
  6. Step 6: Final answer
    x = 183,720.78

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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.