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Finding the Fourth Proportional to 339,801.92, 509,693.71 and 83,636.77

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Solution

The fourth proportional to 339,801.92, 509,693.71 and 83,636.77 is: 125,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,801.92 : 509,693.71 = 83,636.77 : x
  2. Step 2: Convert to fraction form
    339,801.92/509,693.71 = 83,636.77/x
  3. Step 3: Cross multiply
    339,801.92x = 509,693.71 × 83,636.77
  4. Step 4: Simplify right side
    339,801.92x = 42,629,135,593.72
  5. Step 5: Solve for x
    x = 42,629,135,593.72/339,801.92
  6. Step 6: Final answer
    x = 125,452.90

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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.