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Finding the Fourth Proportional to 422,235.36, 582,663.12 and 231,211.80

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Solution

The fourth proportional to 422,235.36, 582,663.12 and 231,211.80 is: 319,060.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,235.36 : 582,663.12 = 231,211.80 : x
  2. Step 2: Convert to fraction form
    422,235.36/582,663.12 = 231,211.80/x
  3. Step 3: Cross multiply
    422,235.36x = 582,663.12 × 231,211.80
  4. Step 4: Simplify right side
    422,235.36x = 134,718,588,768.82
  5. Step 5: Solve for x
    x = 134,718,588,768.82/422,235.36
  6. Step 6: Final answer
    x = 319,060.41

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1.5x scale

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.