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Finding the Fourth Proportional to 395,180.58, 592,832.38 and 128,879

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Solution

The fourth proportional to 395,180.58, 592,832.38 and 128,879 is: 193,338.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,180.58 : 592,832.38 = 128,879 : x
  2. Step 2: Convert to fraction form
    395,180.58/592,832.38 = 128,879/x
  3. Step 3: Cross multiply
    395,180.58x = 592,832.38 × 128,879
  4. Step 4: Simplify right side
    395,180.58x = 76,403,644,302.02
  5. Step 5: Solve for x
    x = 76,403,644,302.02/395,180.58
  6. Step 6: Final answer
    x = 193,338.56

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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.