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Finding the Fourth Proportional to 397,197.72, 547,687.86 and 372,003.48

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Solution

The fourth proportional to 397,197.72, 547,687.86 and 372,003.48 is: 512,948.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,197.72 : 547,687.86 = 372,003.48 : x
  2. Step 2: Convert to fraction form
    397,197.72/547,687.86 = 372,003.48/x
  3. Step 3: Cross multiply
    397,197.72x = 547,687.86 × 372,003.48
  4. Step 4: Simplify right side
    397,197.72x = 203,741,789,873.75
  5. Step 5: Solve for x
    x = 203,741,789,873.75/397,197.72
  6. Step 6: Final answer
    x = 512,948.03

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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.