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Finding the Fourth Proportional to 408,022.70, 611,305.05 and 197,195.90

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Solution

The fourth proportional to 408,022.70, 611,305.05 and 197,195.90 is: 295,441.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,022.70 : 611,305.05 = 197,195.90 : x
  2. Step 2: Convert to fraction form
    408,022.70/611,305.05 = 197,195.90/x
  3. Step 3: Cross multiply
    408,022.70x = 611,305.05 × 197,195.90
  4. Step 4: Simplify right side
    408,022.70x = 120,546,849,509.30
  5. Step 5: Solve for x
    x = 120,546,849,509.30/408,022.70
  6. Step 6: Final answer
    x = 295,441.53

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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.