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Finding the Fourth Proportional to 300,251.94, 450,378.23 and 122,758.95

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Solution

The fourth proportional to 300,251.94, 450,378.23 and 122,758.95 is: 184,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,251.94 : 450,378.23 = 122,758.95 : x
  2. Step 2: Convert to fraction form
    300,251.94/450,378.23 = 122,758.95/x
  3. Step 3: Cross multiply
    300,251.94x = 450,378.23 × 122,758.95
  4. Step 4: Simplify right side
    300,251.94x = 55,287,958,003.86
  5. Step 5: Solve for x
    x = 55,287,958,003.86/300,251.94
  6. Step 6: Final answer
    x = 184,138.55

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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.