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Finding the Fourth Proportional to 216,099.58, 324,137.65 and 66,339.89

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Solution

The fourth proportional to 216,099.58, 324,137.65 and 66,339.89 is: 99,506.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,099.58 : 324,137.65 = 66,339.89 : x
  2. Step 2: Convert to fraction form
    216,099.58/324,137.65 = 66,339.89/x
  3. Step 3: Cross multiply
    216,099.58x = 324,137.65 × 66,339.89
  4. Step 4: Simplify right side
    216,099.58x = 21,503,256,045.86
  5. Step 5: Solve for x
    x = 21,503,256,045.86/216,099.58
  6. Step 6: Final answer
    x = 99,506.24

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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.