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Finding the Fourth Proportional to 221,214.80, 331,822.20 and 73,470.80

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Solution

The fourth proportional to 221,214.80, 331,822.20 and 73,470.80 is: 110,206.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,214.80 : 331,822.20 = 73,470.80 : x
  2. Step 2: Convert to fraction form
    221,214.80/331,822.20 = 73,470.80/x
  3. Step 3: Cross multiply
    221,214.80x = 331,822.20 × 73,470.80
  4. Step 4: Simplify right side
    221,214.80x = 24,379,242,491.76
  5. Step 5: Solve for x
    x = 24,379,242,491.76/221,214.80
  6. Step 6: Final answer
    x = 110,206.20

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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.