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Finding the Fourth Proportional to 220,396.80, 330,409.44 and 95,643.84

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Solution

The fourth proportional to 220,396.80, 330,409.44 and 95,643.84 is: 143,385.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,396.80 : 330,409.44 = 95,643.84 : x
  2. Step 2: Convert to fraction form
    220,396.80/330,409.44 = 95,643.84/x
  3. Step 3: Cross multiply
    220,396.80x = 330,409.44 × 95,643.84
  4. Step 4: Simplify right side
    220,396.80x = 31,601,627,613.85
  5. Step 5: Solve for x
    x = 31,601,627,613.85/220,396.80
  6. Step 6: Final answer
    x = 143,385.15

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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.