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Finding the Fourth Proportional to 221,017.60, 331,491.20 and 73,273.60

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Solution

The fourth proportional to 221,017.60, 331,491.20 and 73,273.60 is: 109,898.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,017.60 : 331,491.20 = 73,273.60 : x
  2. Step 2: Convert to fraction form
    221,017.60/331,491.20 = 73,273.60/x
  3. Step 3: Cross multiply
    221,017.60x = 331,491.20 × 73,273.60
  4. Step 4: Simplify right side
    221,017.60x = 24,289,553,592.32
  5. Step 5: Solve for x
    x = 24,289,553,592.32/221,017.60
  6. Step 6: Final answer
    x = 109,898.73

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.