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Finding the Fourth Proportional to 339,951.72, 469,142.21 and 186,993.85

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Solution

The fourth proportional to 339,951.72, 469,142.21 and 186,993.85 is: 258,056.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,951.72 : 469,142.21 = 186,993.85 : x
  2. Step 2: Convert to fraction form
    339,951.72/469,142.21 = 186,993.85/x
  3. Step 3: Cross multiply
    339,951.72x = 469,142.21 × 186,993.85
  4. Step 4: Simplify right side
    339,951.72x = 87,726,708,045.41
  5. Step 5: Solve for x
    x = 87,726,708,045.41/339,951.72
  6. Step 6: Final answer
    x = 258,056.37

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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.