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Finding the Fourth Proportional to 216,532, 324,850.08 and 68,788

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Solution

The fourth proportional to 216,532, 324,850.08 and 68,788 is: 103,198.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,532 : 324,850.08 = 68,788 : x
  2. Step 2: Convert to fraction form
    216,532/324,850.08 = 68,788/x
  3. Step 3: Cross multiply
    216,532x = 324,850.08 × 68,788
  4. Step 4: Simplify right side
    216,532x = 22,345,787,303.04
  5. Step 5: Solve for x
    x = 22,345,787,303.04/216,532
  6. Step 6: Final answer
    x = 103,198.54

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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.