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Finding the Fourth Proportional to 221,501.86, 332,179.89 and 121,774.66

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Solution

The fourth proportional to 221,501.86, 332,179.89 and 121,774.66 is: 182,621.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,501.86 : 332,179.89 = 121,774.66 : x
  2. Step 2: Convert to fraction form
    221,501.86/332,179.89 = 121,774.66/x
  3. Step 3: Cross multiply
    221,501.86x = 332,179.89 × 121,774.66
  4. Step 4: Simplify right side
    221,501.86x = 40,451,093,163.59
  5. Step 5: Solve for x
    x = 40,451,093,163.59/221,501.86
  6. Step 6: Final answer
    x = 182,621.91

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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.