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Finding the Fourth Proportional to 363,933.68, 545,486.40 and 221,464.73

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Solution

The fourth proportional to 363,933.68, 545,486.40 and 221,464.73 is: 331,945.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,933.68 : 545,486.40 = 221,464.73 : x
  2. Step 2: Convert to fraction form
    363,933.68/545,486.40 = 221,464.73/x
  3. Step 3: Cross multiply
    363,933.68x = 545,486.40 × 221,464.73
  4. Step 4: Simplify right side
    363,933.68x = 120,805,999,658.39
  5. Step 5: Solve for x
    x = 120,805,999,658.39/363,933.68
  6. Step 6: Final answer
    x = 331,945.10

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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.