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Finding the Fourth Proportional to 422,237.68, 582,696.45 and 231,251.09

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Solution

The fourth proportional to 422,237.68, 582,696.45 and 231,251.09 is: 319,131.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,237.68 : 582,696.45 = 231,251.09 : x
  2. Step 2: Convert to fraction form
    422,237.68/582,696.45 = 231,251.09/x
  3. Step 3: Cross multiply
    422,237.68x = 582,696.45 × 231,251.09
  4. Step 4: Simplify right side
    422,237.68x = 134,749,186,288.15
  5. Step 5: Solve for x
    x = 134,749,186,288.15/422,237.68
  6. Step 6: Final answer
    x = 319,131.13

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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.