Home / 279,583.20-419,374.80-69,221.14

Finding the Fourth Proportional to 279,583.20, 419,374.80 and 69,221.14

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Solution

The fourth proportional to 279,583.20, 419,374.80 and 69,221.14 is: 103,831.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,583.20 : 419,374.80 = 69,221.14 : x
  2. Step 2: Convert to fraction form
    279,583.20/419,374.80 = 69,221.14/x
  3. Step 3: Cross multiply
    279,583.20x = 419,374.80 × 69,221.14
  4. Step 4: Simplify right side
    279,583.20x = 29,029,601,743.27
  5. Step 5: Solve for x
    x = 29,029,601,743.27/279,583.20
  6. Step 6: Final answer
    x = 103,831.71

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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.