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Finding the Fourth Proportional to 397,227.64, 548,177.72 and 215,939.92

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Solution

The fourth proportional to 397,227.64, 548,177.72 and 215,939.92 is: 297,999.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,227.64 : 548,177.72 = 215,939.92 : x
  2. Step 2: Convert to fraction form
    397,227.64/548,177.72 = 215,939.92/x
  3. Step 3: Cross multiply
    397,227.64x = 548,177.72 × 215,939.92
  4. Step 4: Simplify right side
    397,227.64x = 118,373,453,002.58
  5. Step 5: Solve for x
    x = 118,373,453,002.58/397,227.64
  6. Step 6: Final answer
    x = 297,999.03

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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.