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Finding the Fourth Proportional to 300,206.60, 449,216.40 and 221,474.60

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Solution

The fourth proportional to 300,206.60, 449,216.40 and 221,474.60 is: 331,405.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,206.60 : 449,216.40 = 221,474.60 : x
  2. Step 2: Convert to fraction form
    300,206.60/449,216.40 = 221,474.60/x
  3. Step 3: Cross multiply
    300,206.60x = 449,216.40 × 221,474.60
  4. Step 4: Simplify right side
    300,206.60x = 99,490,022,503.44
  5. Step 5: Solve for x
    x = 99,490,022,503.44/300,206.60
  6. Step 6: Final answer
    x = 331,405.18

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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.