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Finding the Fourth Proportional to 422,131.20, 582,540.80 and 252,364.80

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Solution

The fourth proportional to 422,131.20, 582,540.80 and 252,364.80 is: 348,263.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,131.20 : 582,540.80 = 252,364.80 : x
  2. Step 2: Convert to fraction form
    422,131.20/582,540.80 = 252,364.80/x
  3. Step 3: Cross multiply
    422,131.20x = 582,540.80 × 252,364.80
  4. Step 4: Simplify right side
    422,131.20x = 147,012,792,483.84
  5. Step 5: Solve for x
    x = 147,012,792,483.84/422,131.20
  6. Step 6: Final answer
    x = 348,263.27

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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.