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Finding the Fourth Proportional to 395,528.32, 593,338.56 and 129,308.80

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Solution

The fourth proportional to 395,528.32, 593,338.56 and 129,308.80 is: 193,978.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,528.32 : 593,338.56 = 129,308.80 : x
  2. Step 2: Convert to fraction form
    395,528.32/593,338.56 = 129,308.80/x
  3. Step 3: Cross multiply
    395,528.32x = 593,338.56 × 129,308.80
  4. Step 4: Simplify right side
    395,528.32x = 76,723,897,187.33
  5. Step 5: Solve for x
    x = 76,723,897,187.33/395,528.32
  6. Step 6: Final answer
    x = 193,978.26

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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.