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Finding the Fourth Proportional to 323,474.40, 485,276.40 and 271,245.60

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Solution

The fourth proportional to 323,474.40, 485,276.40 and 271,245.60 is: 406,922.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,474.40 : 485,276.40 = 271,245.60 : x
  2. Step 2: Convert to fraction form
    323,474.40/485,276.40 = 271,245.60/x
  3. Step 3: Cross multiply
    323,474.40x = 485,276.40 × 271,245.60
  4. Step 4: Simplify right side
    323,474.40x = 131,629,088,283.84
  5. Step 5: Solve for x
    x = 131,629,088,283.84/323,474.40
  6. Step 6: Final answer
    x = 406,922.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.