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Finding the Fourth Proportional to 222,515.21, 333,815.78 and 72,715.10

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Solution

The fourth proportional to 222,515.21, 333,815.78 and 72,715.10 is: 109,086.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,515.21 : 333,815.78 = 72,715.10 : x
  2. Step 2: Convert to fraction form
    222,515.21/333,815.78 = 72,715.10/x
  3. Step 3: Cross multiply
    222,515.21x = 333,815.78 × 72,715.10
  4. Step 4: Simplify right side
    222,515.21x = 24,273,446,336.99
  5. Step 5: Solve for x
    x = 24,273,446,336.99/222,515.21
  6. Step 6: Final answer
    x = 109,086.68

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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.