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Finding the Fourth Proportional to 220,895.28, 331,388.28 and 71,090.64

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Solution

The fourth proportional to 220,895.28, 331,388.28 and 71,090.64 is: 106,650.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,895.28 : 331,388.28 = 71,090.64 : x
  2. Step 2: Convert to fraction form
    220,895.28/331,388.28 = 71,090.64/x
  3. Step 3: Cross multiply
    220,895.28x = 331,388.28 × 71,090.64
  4. Step 4: Simplify right side
    220,895.28x = 23,558,604,913.70
  5. Step 5: Solve for x
    x = 23,558,604,913.70/220,895.28
  6. Step 6: Final answer
    x = 106,650.56

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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.