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Finding the Fourth Proportional to 216,367.50, 324,593.10 and 66,581.22

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Solution

The fourth proportional to 216,367.50, 324,593.10 and 66,581.22 is: 99,884.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,367.50 : 324,593.10 = 66,581.22 : x
  2. Step 2: Convert to fraction form
    216,367.50/324,593.10 = 66,581.22/x
  3. Step 3: Cross multiply
    216,367.50x = 324,593.10 × 66,581.22
  4. Step 4: Simplify right side
    216,367.50x = 21,611,804,601.58
  5. Step 5: Solve for x
    x = 21,611,804,601.58/216,367.50
  6. Step 6: Final answer
    x = 99,884.71

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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.