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Finding the Fourth Proportional to 216,759.88, 325,198.26 and 90,358.12

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Solution

The fourth proportional to 216,759.88, 325,198.26 and 90,358.12 is: 135,561.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,759.88 : 325,198.26 = 90,358.12 : x
  2. Step 2: Convert to fraction form
    216,759.88/325,198.26 = 90,358.12/x
  3. Step 3: Cross multiply
    216,759.88x = 325,198.26 × 90,358.12
  4. Step 4: Simplify right side
    216,759.88x = 29,384,303,400.87
  5. Step 5: Solve for x
    x = 29,384,303,400.87/216,759.88
  6. Step 6: Final answer
    x = 135,561.54

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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.