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Finding the Fourth Proportional to 428,906.60, 591,843.36 and 237,872.12

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Solution

The fourth proportional to 428,906.60, 591,843.36 and 237,872.12 is: 328,237.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,906.60 : 591,843.36 = 237,872.12 : x
  2. Step 2: Convert to fraction form
    428,906.60/591,843.36 = 237,872.12/x
  3. Step 3: Cross multiply
    428,906.60x = 591,843.36 × 237,872.12
  4. Step 4: Simplify right side
    428,906.60x = 140,783,034,751.12
  5. Step 5: Solve for x
    x = 140,783,034,751.12/428,906.60
  6. Step 6: Final answer
    x = 328,237.04

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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.