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Finding the Fourth Proportional to 395,928, 593,991.05 and 115,445.25

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Solution

The fourth proportional to 395,928, 593,991.05 and 115,445.25 is: 173,196.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,928 : 593,991.05 = 115,445.25 : x
  2. Step 2: Convert to fraction form
    395,928/593,991.05 = 115,445.25/x
  3. Step 3: Cross multiply
    395,928x = 593,991.05 × 115,445.25
  4. Step 4: Simplify right side
    395,928x = 68,573,444,687.79
  5. Step 5: Solve for x
    x = 68,573,444,687.79/395,928
  6. Step 6: Final answer
    x = 173,196.75

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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.