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Finding the Fourth Proportional to 327,093.60, 490,640.40 and 285,621.60

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Solution

The fourth proportional to 327,093.60, 490,640.40 and 285,621.60 is: 428,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,093.60 : 490,640.40 = 285,621.60 : x
  2. Step 2: Convert to fraction form
    327,093.60/490,640.40 = 285,621.60/x
  3. Step 3: Cross multiply
    327,093.60x = 490,640.40 × 285,621.60
  4. Step 4: Simplify right side
    327,093.60x = 140,137,496,072.64
  5. Step 5: Solve for x
    x = 140,137,496,072.64/327,093.60
  6. Step 6: Final answer
    x = 428,432.40

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1.5x scale

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.