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Finding the Fourth Proportional to 221,682.22, 332,655.81 and 81,455.02

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Solution

The fourth proportional to 221,682.22, 332,655.81 and 81,455.02 is: 122,231.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,682.22 : 332,655.81 = 81,455.02 : x
  2. Step 2: Convert to fraction form
    221,682.22/332,655.81 = 81,455.02/x
  3. Step 3: Cross multiply
    221,682.22x = 332,655.81 × 81,455.02
  4. Step 4: Simplify right side
    221,682.22x = 27,096,485,656.67
  5. Step 5: Solve for x
    x = 27,096,485,656.67/221,682.22
  6. Step 6: Final answer
    x = 122,231.21

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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.