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Finding the Fourth Proportional to 325,428.87, 487,960.50 and 222,961.85

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Solution

The fourth proportional to 325,428.87, 487,960.50 and 222,961.85 is: 334,317.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,428.87 : 487,960.50 = 222,961.85 : x
  2. Step 2: Convert to fraction form
    325,428.87/487,960.50 = 222,961.85/x
  3. Step 3: Cross multiply
    325,428.87x = 487,960.50 × 222,961.85
  4. Step 4: Simplify right side
    325,428.87x = 108,796,576,033.08
  5. Step 5: Solve for x
    x = 108,796,576,033.08/325,428.87
  6. Step 6: Final answer
    x = 334,317.53

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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.