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Finding the Fourth Proportional to 422,173.28, 582,605.88 and 231,183.32

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Solution

The fourth proportional to 422,173.28, 582,605.88 and 231,183.32 is: 319,036.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,173.28 : 582,605.88 = 231,183.32 : x
  2. Step 2: Convert to fraction form
    422,173.28/582,605.88 = 231,183.32/x
  3. Step 3: Cross multiply
    422,173.28x = 582,605.88 × 231,183.32
  4. Step 4: Simplify right side
    422,173.28x = 134,688,761,589.92
  5. Step 5: Solve for x
    x = 134,688,761,589.92/422,173.28
  6. Step 6: Final answer
    x = 319,036.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.