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Finding the Fourth Proportional to 300,203.60, 449,211.90 and 221,471.60

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Solution

The fourth proportional to 300,203.60, 449,211.90 and 221,471.60 is: 331,400.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,203.60 : 449,211.90 = 221,471.60 : x
  2. Step 2: Convert to fraction form
    300,203.60/449,211.90 = 221,471.60/x
  3. Step 3: Cross multiply
    300,203.60x = 449,211.90 × 221,471.60
  4. Step 4: Simplify right side
    300,203.60x = 99,487,678,232.04
  5. Step 5: Solve for x
    x = 99,487,678,232.04/300,203.60
  6. Step 6: Final answer
    x = 331,400.68

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1.5x scale

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.