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Finding the Fourth Proportional to 225,907.04, 311,789.12 and 125,337.44

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Solution

The fourth proportional to 225,907.04, 311,789.12 and 125,337.44 is: 172,986.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,907.04 : 311,789.12 = 125,337.44 : x
  2. Step 2: Convert to fraction form
    225,907.04/311,789.12 = 125,337.44/x
  3. Step 3: Cross multiply
    225,907.04x = 311,789.12 × 125,337.44
  4. Step 4: Simplify right side
    225,907.04x = 39,078,850,120.65
  5. Step 5: Solve for x
    x = 39,078,850,120.65/225,907.04
  6. Step 6: Final answer
    x = 172,986.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.