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Finding the Fourth Proportional to 339,719.80, 509,450.10 and 102,983.80

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Solution

The fourth proportional to 339,719.80, 509,450.10 and 102,983.80 is: 154,436.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,719.80 : 509,450.10 = 102,983.80 : x
  2. Step 2: Convert to fraction form
    339,719.80/509,450.10 = 102,983.80/x
  3. Step 3: Cross multiply
    339,719.80x = 509,450.10 × 102,983.80
  4. Step 4: Simplify right side
    339,719.80x = 52,465,107,208.38
  5. Step 5: Solve for x
    x = 52,465,107,208.38/339,719.80
  6. Step 6: Final answer
    x = 154,436.41

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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.