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Finding the Fourth Proportional to 280,195, 419,922.16 and 102,530.96

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Solution

The fourth proportional to 280,195, 419,922.16 and 102,530.96 is: 153,660.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,195 : 419,922.16 = 102,530.96 : x
  2. Step 2: Convert to fraction form
    280,195/419,922.16 = 102,530.96/x
  3. Step 3: Cross multiply
    280,195x = 419,922.16 × 102,530.96
  4. Step 4: Simplify right side
    280,195x = 43,055,022,190.07
  5. Step 5: Solve for x
    x = 43,055,022,190.07/280,195
  6. Step 6: Final answer
    x = 153,660.92

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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.