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Finding the Fourth Proportional to 363,872.12, 545,204.86 and 221,286.13

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Solution

The fourth proportional to 363,872.12, 545,204.86 and 221,286.13 is: 331,562.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,872.12 : 545,204.86 = 221,286.13 : x
  2. Step 2: Convert to fraction form
    363,872.12/545,204.86 = 221,286.13/x
  3. Step 3: Cross multiply
    363,872.12x = 545,204.86 × 221,286.13
  4. Step 4: Simplify right side
    363,872.12x = 120,646,271,610.36
  5. Step 5: Solve for x
    x = 120,646,271,610.36/363,872.12
  6. Step 6: Final answer
    x = 331,562.29

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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.