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Finding the Fourth Proportional to 216,993.68, 325,239.02 and 128,321.77

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Solution

The fourth proportional to 216,993.68, 325,239.02 and 128,321.77 is: 192,333.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,993.68 : 325,239.02 = 128,321.77 : x
  2. Step 2: Convert to fraction form
    216,993.68/325,239.02 = 128,321.77/x
  3. Step 3: Cross multiply
    216,993.68x = 325,239.02 × 128,321.77
  4. Step 4: Simplify right side
    216,993.68x = 41,735,246,716.69
  5. Step 5: Solve for x
    x = 41,735,246,716.69/216,993.68
  6. Step 6: Final answer
    x = 192,333.92

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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.