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Finding the Fourth Proportional to 221,220.86, 331,832.61 and 55,008.86

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Solution

The fourth proportional to 221,220.86, 331,832.61 and 55,008.86 is: 82,513.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,220.86 : 331,832.61 = 55,008.86 : x
  2. Step 2: Convert to fraction form
    221,220.86/331,832.61 = 55,008.86/x
  3. Step 3: Cross multiply
    221,220.86x = 331,832.61 × 55,008.86
  4. Step 4: Simplify right side
    221,220.86x = 18,253,733,586.92
  5. Step 5: Solve for x
    x = 18,253,733,586.92/221,220.86
  6. Step 6: Final answer
    x = 82,513.62

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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.