Home / 278,800.80-418,217.22-79,105.56

Finding the Fourth Proportional to 278,800.80, 418,217.22 and 79,105.56

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Solution

The fourth proportional to 278,800.80, 418,217.22 and 79,105.56 is: 118,662.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,800.80 : 418,217.22 = 79,105.56 : x
  2. Step 2: Convert to fraction form
    278,800.80/418,217.22 = 79,105.56/x
  3. Step 3: Cross multiply
    278,800.80x = 418,217.22 × 79,105.56
  4. Step 4: Simplify right side
    278,800.80x = 33,083,307,389.74
  5. Step 5: Solve for x
    x = 33,083,307,389.74/278,800.80
  6. Step 6: Final answer
    x = 118,662.89

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1.5x scale

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.