Home / 339,738.07-509,233.44-139,949.50

Finding the Fourth Proportional to 339,738.07, 509,233.44 and 139,949.50

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Solution

The fourth proportional to 339,738.07, 509,233.44 and 139,949.50 is: 209,770.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,738.07 : 509,233.44 = 139,949.50 : x
  2. Step 2: Convert to fraction form
    339,738.07/509,233.44 = 139,949.50/x
  3. Step 3: Cross multiply
    339,738.07x = 509,233.44 × 139,949.50
  4. Step 4: Simplify right side
    339,738.07x = 71,266,965,311.28
  5. Step 5: Solve for x
    x = 71,266,965,311.28/339,738.07
  6. Step 6: Final answer
    x = 209,770.32

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1.5x scale

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.