Home / 279,012.14-418,508.95-121,240.60

Finding the Fourth Proportional to 279,012.14, 418,508.95 and 121,240.60

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Solution

The fourth proportional to 279,012.14, 418,508.95 and 121,240.60 is: 181,856.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,012.14 : 418,508.95 = 121,240.60 : x
  2. Step 2: Convert to fraction form
    279,012.14/418,508.95 = 121,240.60/x
  3. Step 3: Cross multiply
    279,012.14x = 418,508.95 × 121,240.60
  4. Step 4: Simplify right side
    279,012.14x = 50,740,275,422.31
  5. Step 5: Solve for x
    x = 50,740,275,422.31/279,012.14
  6. Step 6: Final answer
    x = 181,856.87

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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.