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Finding the Fourth Proportional to 221,665.68, 332,467.32 and 71,907.28

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Solution

The fourth proportional to 221,665.68, 332,467.32 and 71,907.28 is: 107,850.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,665.68 : 332,467.32 = 71,907.28 : x
  2. Step 2: Convert to fraction form
    221,665.68/332,467.32 = 71,907.28/x
  3. Step 3: Cross multiply
    221,665.68x = 332,467.32 × 71,907.28
  4. Step 4: Simplify right side
    221,665.68x = 23,906,820,670.09
  5. Step 5: Solve for x
    x = 23,906,820,670.09/221,665.68
  6. Step 6: Final answer
    x = 107,850.80

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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.