Home / 319,983.20-479,845.20-109,512.80

Finding the Fourth Proportional to 319,983.20, 479,845.20 and 109,512.80

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Solution

The fourth proportional to 319,983.20, 479,845.20 and 109,512.80 is: 164,224.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,983.20 : 479,845.20 = 109,512.80 : x
  2. Step 2: Convert to fraction form
    319,983.20/479,845.20 = 109,512.80/x
  3. Step 3: Cross multiply
    319,983.20x = 479,845.20 × 109,512.80
  4. Step 4: Simplify right side
    319,983.20x = 52,549,191,418.56
  5. Step 5: Solve for x
    x = 52,549,191,418.56/319,983.20
  6. Step 6: Final answer
    x = 164,224.84

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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.