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Finding the Fourth Proportional to 300,067.60, 450,125.16 and 100,389.04

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Solution

The fourth proportional to 300,067.60, 450,125.16 and 100,389.04 is: 150,591.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,067.60 : 450,125.16 = 100,389.04 : x
  2. Step 2: Convert to fraction form
    300,067.60/450,125.16 = 100,389.04/x
  3. Step 3: Cross multiply
    300,067.60x = 450,125.16 × 100,389.04
  4. Step 4: Simplify right side
    300,067.60x = 45,187,632,692.25
  5. Step 5: Solve for x
    x = 45,187,632,692.25/300,067.60
  6. Step 6: Final answer
    x = 150,591.51

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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.