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Finding the Fourth Proportional to 339,986.32, 469,189.86 and 187,028.44

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Solution

The fourth proportional to 339,986.32, 469,189.86 and 187,028.44 is: 258,104.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,986.32 : 469,189.86 = 187,028.44 : x
  2. Step 2: Convert to fraction form
    339,986.32/469,189.86 = 187,028.44/x
  3. Step 3: Cross multiply
    339,986.32x = 469,189.86 × 187,028.44
  4. Step 4: Simplify right side
    339,986.32x = 87,751,847,579.62
  5. Step 5: Solve for x
    x = 87,751,847,579.62/339,986.32
  6. Step 6: Final answer
    x = 258,104.05

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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.