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Finding the Fourth Proportional to 422,401.85, 582,909.67 and 228,805.85

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Solution

The fourth proportional to 422,401.85, 582,909.67 and 228,805.85 is: 315,749.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,401.85 : 582,909.67 = 228,805.85 : x
  2. Step 2: Convert to fraction form
    422,401.85/582,909.67 = 228,805.85/x
  3. Step 3: Cross multiply
    422,401.85x = 582,909.67 × 228,805.85
  4. Step 4: Simplify right side
    422,401.85x = 133,373,142,517.57
  5. Step 5: Solve for x
    x = 133,373,142,517.57/422,401.85
  6. Step 6: Final answer
    x = 315,749.43

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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.