Home / 280,743.67-421,069.39-100,791.84

Finding the Fourth Proportional to 280,743.67, 421,069.39 and 100,791.84

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Solution

The fourth proportional to 280,743.67, 421,069.39 and 100,791.84 is: 151,171.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,743.67 : 421,069.39 = 100,791.84 : x
  2. Step 2: Convert to fraction form
    280,743.67/421,069.39 = 100,791.84/x
  3. Step 3: Cross multiply
    280,743.67x = 421,069.39 × 100,791.84
  4. Step 4: Simplify right side
    280,743.67x = 42,440,359,912.81
  5. Step 5: Solve for x
    x = 42,440,359,912.81/280,743.67
  6. Step 6: Final answer
    x = 151,171.21

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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.