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Finding the Fourth Proportional to 321,906.80, 482,773.80 and 134,879.60

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Solution

The fourth proportional to 321,906.80, 482,773.80 and 134,879.60 is: 202,283.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,906.80 : 482,773.80 = 134,879.60 : x
  2. Step 2: Convert to fraction form
    321,906.80/482,773.80 = 134,879.60/x
  3. Step 3: Cross multiply
    321,906.80x = 482,773.80 × 134,879.60
  4. Step 4: Simplify right side
    321,906.80x = 65,116,337,034.48
  5. Step 5: Solve for x
    x = 65,116,337,034.48/321,906.80
  6. Step 6: Final answer
    x = 202,283.20

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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.