Home / 204,481.40-307,050.15-138,215.30

Finding the Fourth Proportional to 204,481.40, 307,050.15 and 138,215.30

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Solution

The fourth proportional to 204,481.40, 307,050.15 and 138,215.30 is: 207,544.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,481.40 : 307,050.15 = 138,215.30 : x
  2. Step 2: Convert to fraction form
    204,481.40/307,050.15 = 138,215.30/x
  3. Step 3: Cross multiply
    204,481.40x = 307,050.15 × 138,215.30
  4. Step 4: Simplify right side
    204,481.40x = 42,439,028,597.30
  5. Step 5: Solve for x
    x = 42,439,028,597.30/204,481.40
  6. Step 6: Final answer
    x = 207,544.69

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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.