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Finding the Fourth Proportional to 288,343.91, 397,906.89 and 159,279.60

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Solution

The fourth proportional to 288,343.91, 397,906.89 and 159,279.60 is: 219,801.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,343.91 : 397,906.89 = 159,279.60 : x
  2. Step 2: Convert to fraction form
    288,343.91/397,906.89 = 159,279.60/x
  3. Step 3: Cross multiply
    288,343.91x = 397,906.89 × 159,279.60
  4. Step 4: Simplify right side
    288,343.91x = 63,378,451,171.30
  5. Step 5: Solve for x
    x = 63,378,451,171.30/288,343.91
  6. Step 6: Final answer
    x = 219,801.59

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1.5x scale

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.