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Finding the Fourth Proportional to 288,171.39, 397,682.78 and 159,109.44

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Solution

The fourth proportional to 288,171.39, 397,682.78 and 159,109.44 is: 219,574.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,171.39 : 397,682.78 = 159,109.44 : x
  2. Step 2: Convert to fraction form
    288,171.39/397,682.78 = 159,109.44/x
  3. Step 3: Cross multiply
    288,171.39x = 397,682.78 × 159,109.44
  4. Step 4: Simplify right side
    288,171.39x = 63,275,084,423.44
  5. Step 5: Solve for x
    x = 63,275,084,423.44/288,171.39
  6. Step 6: Final answer
    x = 219,574.48

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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.