Home / 278,723.34-418,147.30-89,195.09

Finding the Fourth Proportional to 278,723.34, 418,147.30 and 89,195.09

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Solution

The fourth proportional to 278,723.34, 418,147.30 and 89,195.09 is: 133,812.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,723.34 : 418,147.30 = 89,195.09 : x
  2. Step 2: Convert to fraction form
    278,723.34/418,147.30 = 89,195.09/x
  3. Step 3: Cross multiply
    278,723.34x = 418,147.30 × 89,195.09
  4. Step 4: Simplify right side
    278,723.34x = 37,296,683,520.05
  5. Step 5: Solve for x
    x = 37,296,683,520.05/278,723.34
  6. Step 6: Final answer
    x = 133,812.56

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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.