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Finding the Fourth Proportional to 300,249.87, 450,120.45 and 131,642.42

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Solution

The fourth proportional to 300,249.87, 450,120.45 and 131,642.42 is: 197,352.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,249.87 : 450,120.45 = 131,642.42 : x
  2. Step 2: Convert to fraction form
    300,249.87/450,120.45 = 131,642.42/x
  3. Step 3: Cross multiply
    300,249.87x = 450,120.45 × 131,642.42
  4. Step 4: Simplify right side
    300,249.87x = 59,254,945,329.49
  5. Step 5: Solve for x
    x = 59,254,945,329.49/300,249.87
  6. Step 6: Final answer
    x = 197,352.11

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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.