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Finding the Fourth Proportional to 221,638.94, 332,505.12 and 71,867.56

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Solution

The fourth proportional to 221,638.94, 332,505.12 and 71,867.56 is: 107,816.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,638.94 : 332,505.12 = 71,867.56 : x
  2. Step 2: Convert to fraction form
    221,638.94/332,505.12 = 71,867.56/x
  3. Step 3: Cross multiply
    221,638.94x = 332,505.12 × 71,867.56
  4. Step 4: Simplify right side
    221,638.94x = 23,896,331,661.91
  5. Step 5: Solve for x
    x = 23,896,331,661.91/221,638.94
  6. Step 6: Final answer
    x = 107,816.49

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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.