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Finding the Fourth Proportional to 221,076.68, 331,679.59 and 71,313.64

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Solution

The fourth proportional to 221,076.68, 331,679.59 and 71,313.64 is: 106,991.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,076.68 : 331,679.59 = 71,313.64 : x
  2. Step 2: Convert to fraction form
    221,076.68/331,679.59 = 71,313.64/x
  3. Step 3: Cross multiply
    221,076.68x = 331,679.59 × 71,313.64
  4. Step 4: Simplify right side
    221,076.68x = 23,653,277,869.12
  5. Step 5: Solve for x
    x = 23,653,277,869.12/221,076.68
  6. Step 6: Final answer
    x = 106,991.29

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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.