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Finding the Fourth Proportional to 395,589.68, 593,481.72 and 115,109.36

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Solution

The fourth proportional to 395,589.68, 593,481.72 and 115,109.36 is: 172,692.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,589.68 : 593,481.72 = 115,109.36 : x
  2. Step 2: Convert to fraction form
    395,589.68/593,481.72 = 115,109.36/x
  3. Step 3: Cross multiply
    395,589.68x = 593,481.72 × 115,109.36
  4. Step 4: Simplify right side
    395,589.68x = 68,315,300,960.90
  5. Step 5: Solve for x
    x = 68,315,300,960.90/395,589.68
  6. Step 6: Final answer
    x = 172,692.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.