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Finding the Fourth Proportional to 286,865.44, 395,843.92 and 159,520.48

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Solution

The fourth proportional to 286,865.44, 395,843.92 and 159,520.48 is: 220,121.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,865.44 : 395,843.92 = 159,520.48 : x
  2. Step 2: Convert to fraction form
    286,865.44/395,843.92 = 159,520.48/x
  3. Step 3: Cross multiply
    286,865.44x = 395,843.92 × 159,520.48
  4. Step 4: Simplify right side
    286,865.44x = 63,145,212,123.48
  5. Step 5: Solve for x
    x = 63,145,212,123.48/286,865.44
  6. Step 6: Final answer
    x = 220,121.36

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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.