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Finding the Fourth Proportional to 339,891.39, 509,835.87 and 103,233.69

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Solution

The fourth proportional to 339,891.39, 509,835.87 and 103,233.69 is: 154,850.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,891.39 : 509,835.87 = 103,233.69 : x
  2. Step 2: Convert to fraction form
    339,891.39/509,835.87 = 103,233.69/x
  3. Step 3: Cross multiply
    339,891.39x = 509,835.87 × 103,233.69
  4. Step 4: Simplify right side
    339,891.39x = 52,632,238,154.46
  5. Step 5: Solve for x
    x = 52,632,238,154.46/339,891.39
  6. Step 6: Final answer
    x = 154,850.17

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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.