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Finding the Fourth Proportional to 303,450.80, 455,358.45 and 125,939.30

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Solution

The fourth proportional to 303,450.80, 455,358.45 and 125,939.30 is: 188,984.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,450.80 : 455,358.45 = 125,939.30 : x
  2. Step 2: Convert to fraction form
    303,450.80/455,358.45 = 125,939.30/x
  3. Step 3: Cross multiply
    303,450.80x = 455,358.45 × 125,939.30
  4. Step 4: Simplify right side
    303,450.80x = 57,347,524,442.09
  5. Step 5: Solve for x
    x = 57,347,524,442.09/303,450.80
  6. Step 6: Final answer
    x = 188,984.59

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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.