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Finding the Fourth Proportional to 339,838.91, 509,725.38 and 103,183.64

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Solution

The fourth proportional to 339,838.91, 509,725.38 and 103,183.64 is: 154,765.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,838.91 : 509,725.38 = 103,183.64 : x
  2. Step 2: Convert to fraction form
    339,838.91/509,725.38 = 103,183.64/x
  3. Step 3: Cross multiply
    339,838.91x = 509,725.38 × 103,183.64
  4. Step 4: Simplify right side
    339,838.91x = 52,595,317,560.16
  5. Step 5: Solve for x
    x = 52,595,317,560.16/339,838.91
  6. Step 6: Final answer
    x = 154,765.44

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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.