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Finding the Fourth Proportional to 363,855.36, 545,179.65 and 221,269.32

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Solution

The fourth proportional to 363,855.36, 545,179.65 and 221,269.32 is: 331,537.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,855.36 : 545,179.65 = 221,269.32 : x
  2. Step 2: Convert to fraction form
    363,855.36/545,179.65 = 221,269.32/x
  3. Step 3: Cross multiply
    363,855.36x = 545,179.65 × 221,269.32
  4. Step 4: Simplify right side
    363,855.36x = 120,631,530,433.34
  5. Step 5: Solve for x
    x = 120,631,530,433.34/363,855.36
  6. Step 6: Final answer
    x = 331,537.04

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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.