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Finding the Fourth Proportional to 339,799.92, 509,690.71 and 83,634.77

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Solution

The fourth proportional to 339,799.92, 509,690.71 and 83,634.77 is: 125,449.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,799.92 : 509,690.71 = 83,634.77 : x
  2. Step 2: Convert to fraction form
    339,799.92/509,690.71 = 83,634.77/x
  3. Step 3: Cross multiply
    339,799.92x = 509,690.71 × 83,634.77
  4. Step 4: Simplify right side
    339,799.92x = 42,627,863,813.75
  5. Step 5: Solve for x
    x = 42,627,863,813.75/339,799.92
  6. Step 6: Final answer
    x = 125,449.89

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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.