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Finding the Fourth Proportional to 216,099.42, 324,197.25 and 66,352.74

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Solution

The fourth proportional to 216,099.42, 324,197.25 and 66,352.74 is: 99,543.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,099.42 : 324,197.25 = 66,352.74 : x
  2. Step 2: Convert to fraction form
    216,099.42/324,197.25 = 66,352.74/x
  3. Step 3: Cross multiply
    216,099.42x = 324,197.25 × 66,352.74
  4. Step 4: Simplify right side
    216,099.42x = 21,511,375,837.97
  5. Step 5: Solve for x
    x = 21,511,375,837.97/216,099.42
  6. Step 6: Final answer
    x = 99,543.89

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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.