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Finding the Fourth Proportional to 339,367.80, 508,716.90 and 189,679.80

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Solution

The fourth proportional to 339,367.80, 508,716.90 and 189,679.80 is: 284,332.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,367.80 : 508,716.90 = 189,679.80 : x
  2. Step 2: Convert to fraction form
    339,367.80/508,716.90 = 189,679.80/x
  3. Step 3: Cross multiply
    339,367.80x = 508,716.90 × 189,679.80
  4. Step 4: Simplify right side
    339,367.80x = 96,493,319,848.62
  5. Step 5: Solve for x
    x = 96,493,319,848.62/339,367.80
  6. Step 6: Final answer
    x = 284,332.57

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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.