Home / 206,460.35-309,481.38-139,907.19

Finding the Fourth Proportional to 206,460.35, 309,481.38 and 139,907.19

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Solution

The fourth proportional to 206,460.35, 309,481.38 and 139,907.19 is: 209,719.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,460.35 : 309,481.38 = 139,907.19 : x
  2. Step 2: Convert to fraction form
    206,460.35/309,481.38 = 139,907.19/x
  3. Step 3: Cross multiply
    206,460.35x = 309,481.38 × 139,907.19
  4. Step 4: Simplify right side
    206,460.35x = 43,298,670,233.12
  5. Step 5: Solve for x
    x = 43,298,670,233.12/206,460.35
  6. Step 6: Final answer
    x = 209,719.06

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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.