Home / 279,780.40-419,736.08-111,310.26

Finding the Fourth Proportional to 279,780.40, 419,736.08 and 111,310.26

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Solution

The fourth proportional to 279,780.40, 419,736.08 and 111,310.26 is: 166,991.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,780.40 : 419,736.08 = 111,310.26 : x
  2. Step 2: Convert to fraction form
    279,780.40/419,736.08 = 111,310.26/x
  3. Step 3: Cross multiply
    279,780.40x = 419,736.08 × 111,310.26
  4. Step 4: Simplify right side
    279,780.40x = 46,720,932,196.18
  5. Step 5: Solve for x
    x = 46,720,932,196.18/279,780.40
  6. Step 6: Final answer
    x = 166,991.44

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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.