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Finding the Fourth Proportional to 221,216.20, 331,824.30 and 73,472.20

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Solution

The fourth proportional to 221,216.20, 331,824.30 and 73,472.20 is: 110,208.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,216.20 : 331,824.30 = 73,472.20 : x
  2. Step 2: Convert to fraction form
    221,216.20/331,824.30 = 73,472.20/x
  3. Step 3: Cross multiply
    221,216.20x = 331,824.30 × 73,472.20
  4. Step 4: Simplify right side
    221,216.20x = 24,379,861,334.46
  5. Step 5: Solve for x
    x = 24,379,861,334.46/221,216.20
  6. Step 6: Final answer
    x = 110,208.30

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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.