Home / 216,566.73-324,880.61-66,819.20

Finding the Fourth Proportional to 216,566.73, 324,880.61 and 66,819.20

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Solution

The fourth proportional to 216,566.73, 324,880.61 and 66,819.20 is: 100,238.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,566.73 : 324,880.61 = 66,819.20 : x
  2. Step 2: Convert to fraction form
    216,566.73/324,880.61 = 66,819.20/x
  3. Step 3: Cross multiply
    216,566.73x = 324,880.61 × 66,819.20
  4. Step 4: Simplify right side
    216,566.73x = 21,708,260,497.21
  5. Step 5: Solve for x
    x = 21,708,260,497.21/216,566.73
  6. Step 6: Final answer
    x = 100,238.21

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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.