Home / 339,724.42-509,647.92-139,935.76

Finding the Fourth Proportional to 339,724.42, 509,647.92 and 139,935.76

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Solution

The fourth proportional to 339,724.42, 509,647.92 and 139,935.76 is: 209,928.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,724.42 : 509,647.92 = 139,935.76 : x
  2. Step 2: Convert to fraction form
    339,724.42/509,647.92 = 139,935.76/x
  3. Step 3: Cross multiply
    339,724.42x = 509,647.92 × 139,935.76
  4. Step 4: Simplify right side
    339,724.42x = 71,317,969,017.62
  5. Step 5: Solve for x
    x = 71,317,969,017.62/339,724.42
  6. Step 6: Final answer
    x = 209,928.89

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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.