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Finding the Fourth Proportional to 216,906.40, 325,329.60 and 67,249.60

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Solution

The fourth proportional to 216,906.40, 325,329.60 and 67,249.60 is: 100,865.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,906.40 : 325,329.60 = 67,249.60 : x
  2. Step 2: Convert to fraction form
    216,906.40/325,329.60 = 67,249.60/x
  3. Step 3: Cross multiply
    216,906.40x = 325,329.60 × 67,249.60
  4. Step 4: Simplify right side
    216,906.40x = 21,878,285,468.16
  5. Step 5: Solve for x
    x = 21,878,285,468.16/216,906.40
  6. Step 6: Final answer
    x = 100,865.10

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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.