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Finding the Fourth Proportional to 422,216.32, 582,636.88 and 231,192.80

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Solution

The fourth proportional to 422,216.32, 582,636.88 and 231,192.80 is: 319,034.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,216.32 : 582,636.88 = 231,192.80 : x
  2. Step 2: Convert to fraction form
    422,216.32/582,636.88 = 231,192.80/x
  3. Step 3: Cross multiply
    422,216.32x = 582,636.88 × 231,192.80
  4. Step 4: Simplify right side
    422,216.32x = 134,701,451,670.46
  5. Step 5: Solve for x
    x = 134,701,451,670.46/422,216.32
  6. Step 6: Final answer
    x = 319,034.21

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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.