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Finding the Fourth Proportional to 422,108.18, 582,504.84 and 228,511.56

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Solution

The fourth proportional to 422,108.18, 582,504.84 and 228,511.56 is: 315,343.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,108.18 : 582,504.84 = 228,511.56 : x
  2. Step 2: Convert to fraction form
    422,108.18/582,504.84 = 228,511.56/x
  3. Step 3: Cross multiply
    422,108.18x = 582,504.84 × 228,511.56
  4. Step 4: Simplify right side
    422,108.18x = 133,109,089,695.95
  5. Step 5: Solve for x
    x = 133,109,089,695.95/422,108.18
  6. Step 6: Final answer
    x = 315,343.55

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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.