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Finding the Fourth Proportional to 321,930.60, 482,895.90 and 188,874.60

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Solution

The fourth proportional to 321,930.60, 482,895.90 and 188,874.60 is: 283,311.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,930.60 : 482,895.90 = 188,874.60 : x
  2. Step 2: Convert to fraction form
    321,930.60/482,895.90 = 188,874.60/x
  3. Step 3: Cross multiply
    321,930.60x = 482,895.90 × 188,874.60
  4. Step 4: Simplify right side
    321,930.60x = 91,206,769,954.14
  5. Step 5: Solve for x
    x = 91,206,769,954.14/321,930.60
  6. Step 6: Final answer
    x = 283,311.90

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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.