Home / 321,949.12-482,942.96-85,291.12

Finding the Fourth Proportional to 321,949.12, 482,942.96 and 85,291.12

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Solution

The fourth proportional to 321,949.12, 482,942.96 and 85,291.12 is: 127,941.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,949.12 : 482,942.96 = 85,291.12 : x
  2. Step 2: Convert to fraction form
    321,949.12/482,942.96 = 85,291.12/x
  3. Step 3: Cross multiply
    321,949.12x = 482,942.96 × 85,291.12
  4. Step 4: Simplify right side
    321,949.12x = 41,190,745,954.52
  5. Step 5: Solve for x
    x = 41,190,745,954.52/321,949.12
  6. Step 6: Final answer
    x = 127,941.79

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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.