Home / 279,968.42-419,890.44-80,287.94

Finding the Fourth Proportional to 279,968.42, 419,890.44 and 80,287.94

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Solution

The fourth proportional to 279,968.42, 419,890.44 and 80,287.94 is: 120,414.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,968.42 : 419,890.44 = 80,287.94 : x
  2. Step 2: Convert to fraction form
    279,968.42/419,890.44 = 80,287.94/x
  3. Step 3: Cross multiply
    279,968.42x = 419,890.44 × 80,287.94
  4. Step 4: Simplify right side
    279,968.42x = 33,712,138,453.29
  5. Step 5: Solve for x
    x = 33,712,138,453.29/279,968.42
  6. Step 6: Final answer
    x = 120,414.08

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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.