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Finding the Fourth Proportional to 300,907.80, 451,322.58 and 143,236.44

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Solution

The fourth proportional to 300,907.80, 451,322.58 and 143,236.44 is: 214,836.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,907.80 : 451,322.58 = 143,236.44 : x
  2. Step 2: Convert to fraction form
    300,907.80/451,322.58 = 143,236.44/x
  3. Step 3: Cross multiply
    300,907.80x = 451,322.58 × 143,236.44
  4. Step 4: Simplify right side
    300,907.80x = 64,645,839,650.82
  5. Step 5: Solve for x
    x = 64,645,839,650.82/300,907.80
  6. Step 6: Final answer
    x = 214,836.04

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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.