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Finding the Fourth Proportional to 395,906.40, 593,859.60 and 159,418.80

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Solution

The fourth proportional to 395,906.40, 593,859.60 and 159,418.80 is: 239,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,906.40 : 593,859.60 = 159,418.80 : x
  2. Step 2: Convert to fraction form
    395,906.40/593,859.60 = 159,418.80/x
  3. Step 3: Cross multiply
    395,906.40x = 593,859.60 × 159,418.80
  4. Step 4: Simplify right side
    395,906.40x = 94,672,384,800.48
  5. Step 5: Solve for x
    x = 94,672,384,800.48/395,906.40
  6. Step 6: Final answer
    x = 239,128.20

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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.