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Finding the Fourth Proportional to 363,485.52, 545,196.96 and 221,293.98

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Solution

The fourth proportional to 363,485.52, 545,196.96 and 221,293.98 is: 331,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,485.52 : 545,196.96 = 221,293.98 : x
  2. Step 2: Convert to fraction form
    363,485.52/545,196.96 = 221,293.98/x
  3. Step 3: Cross multiply
    363,485.52x = 545,196.96 × 221,293.98
  4. Step 4: Simplify right side
    363,485.52x = 120,648,805,162.30
  5. Step 5: Solve for x
    x = 120,648,805,162.30/363,485.52
  6. Step 6: Final answer
    x = 331,921.90

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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.