Home / 279,845.11-419,856.41-99,926.60

Finding the Fourth Proportional to 279,845.11, 419,856.41 and 99,926.60

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Solution

The fourth proportional to 279,845.11, 419,856.41 and 99,926.60 is: 149,921.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,845.11 : 419,856.41 = 99,926.60 : x
  2. Step 2: Convert to fraction form
    279,845.11/419,856.41 = 99,926.60/x
  3. Step 3: Cross multiply
    279,845.11x = 419,856.41 × 99,926.60
  4. Step 4: Simplify right side
    279,845.11x = 41,954,821,690.04
  5. Step 5: Solve for x
    x = 41,954,821,690.04/279,845.11
  6. Step 6: Final answer
    x = 149,921.58

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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.