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Finding the Fourth Proportional to 300,135.39, 450,203.86 and 122,642.37

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Solution

The fourth proportional to 300,135.39, 450,203.86 and 122,642.37 is: 183,963.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,135.39 : 450,203.86 = 122,642.37 : x
  2. Step 2: Convert to fraction form
    300,135.39/450,203.86 = 122,642.37/x
  3. Step 3: Cross multiply
    300,135.39x = 450,203.86 × 122,642.37
  4. Step 4: Simplify right side
    300,135.39x = 55,214,067,836.99
  5. Step 5: Solve for x
    x = 55,214,067,836.99/300,135.39
  6. Step 6: Final answer
    x = 183,963.87

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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.