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Finding the Fourth Proportional to 245,418.50, 367,930.38 and 138,736.64

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Solution

The fourth proportional to 245,418.50, 367,930.38 and 138,736.64 is: 207,993.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,418.50 : 367,930.38 = 138,736.64 : x
  2. Step 2: Convert to fraction form
    245,418.50/367,930.38 = 138,736.64/x
  3. Step 3: Cross multiply
    245,418.50x = 367,930.38 × 138,736.64
  4. Step 4: Simplify right side
    245,418.50x = 51,045,424,675.12
  5. Step 5: Solve for x
    x = 51,045,424,675.12/245,418.50
  6. Step 6: Final answer
    x = 207,993.39

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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.