Home / 445,288.16-667,867.44-129,660.32

Finding the Fourth Proportional to 445,288.16, 667,867.44 and 129,660.32

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Solution

The fourth proportional to 445,288.16, 667,867.44 and 129,660.32 is: 194,471.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,288.16 : 667,867.44 = 129,660.32 : x
  2. Step 2: Convert to fraction form
    445,288.16/667,867.44 = 129,660.32/x
  3. Step 3: Cross multiply
    445,288.16x = 667,867.44 × 129,660.32
  4. Step 4: Simplify right side
    445,288.16x = 86,595,905,987.98
  5. Step 5: Solve for x
    x = 86,595,905,987.98/445,288.16
  6. Step 6: Final answer
    x = 194,471.61

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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.