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Finding the Fourth Proportional to 326,995.99, 490,503.17 and 90,338.65

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Solution

The fourth proportional to 326,995.99, 490,503.17 and 90,338.65 is: 135,510.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,995.99 : 490,503.17 = 90,338.65 : x
  2. Step 2: Convert to fraction form
    326,995.99/490,503.17 = 90,338.65/x
  3. Step 3: Cross multiply
    326,995.99x = 490,503.17 × 90,338.65
  4. Step 4: Simplify right side
    326,995.99x = 44,311,394,198.52
  5. Step 5: Solve for x
    x = 44,311,394,198.52/326,995.99
  6. Step 6: Final answer
    x = 135,510.51

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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.