Home / 245,850.20-339,279.66-138,424.16

Finding the Fourth Proportional to 245,850.20, 339,279.66 and 138,424.16

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Solution

The fourth proportional to 245,850.20, 339,279.66 and 138,424.16 is: 191,028.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,850.20 : 339,279.66 = 138,424.16 : x
  2. Step 2: Convert to fraction form
    245,850.20/339,279.66 = 138,424.16/x
  3. Step 3: Cross multiply
    245,850.20x = 339,279.66 × 138,424.16
  4. Step 4: Simplify right side
    245,850.20x = 46,964,501,940.59
  5. Step 5: Solve for x
    x = 46,964,501,940.59/245,850.20
  6. Step 6: Final answer
    x = 191,028.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.