Home / 422,128.97-582,538.94-228,538.72

Finding the Fourth Proportional to 422,128.97, 582,538.94 and 228,538.72

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Solution

The fourth proportional to 422,128.97, 582,538.94 and 228,538.72 is: 315,383.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,128.97 : 582,538.94 = 228,538.72 : x
  2. Step 2: Convert to fraction form
    422,128.97/582,538.94 = 228,538.72/x
  3. Step 3: Cross multiply
    422,128.97x = 582,538.94 × 228,538.72
  4. Step 4: Simplify right side
    422,128.97x = 133,132,703,697.76
  5. Step 5: Solve for x
    x = 133,132,703,697.76/422,128.97
  6. Step 6: Final answer
    x = 315,383.95

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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.