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Finding the Fourth Proportional to 422,066.09, 582,451.22 and 231,079.50

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Solution

The fourth proportional to 422,066.09, 582,451.22 and 231,079.50 is: 318,889.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,066.09 : 582,451.22 = 231,079.50 : x
  2. Step 2: Convert to fraction form
    422,066.09/582,451.22 = 231,079.50/x
  3. Step 3: Cross multiply
    422,066.09x = 582,451.22 × 231,079.50
  4. Step 4: Simplify right side
    422,066.09x = 134,592,537,269.69
  5. Step 5: Solve for x
    x = 134,592,537,269.69/422,066.09
  6. Step 6: Final answer
    x = 318,889.72

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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.