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Finding the Fourth Proportional to 303,349.80, 455,121.90 and 203,622.60

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Solution

The fourth proportional to 303,349.80, 455,121.90 and 203,622.60 is: 305,499.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,349.80 : 455,121.90 = 203,622.60 : x
  2. Step 2: Convert to fraction form
    303,349.80/455,121.90 = 203,622.60/x
  3. Step 3: Cross multiply
    303,349.80x = 455,121.90 × 203,622.60
  4. Step 4: Simplify right side
    303,349.80x = 92,673,104,594.94
  5. Step 5: Solve for x
    x = 92,673,104,594.94/303,349.80
  6. Step 6: Final answer
    x = 305,499.15

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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.