Home / 302,682.20-454,049.40-78,040.64

Finding the Fourth Proportional to 302,682.20, 454,049.40 and 78,040.64

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Solution

The fourth proportional to 302,682.20, 454,049.40 and 78,040.64 is: 117,067.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,682.20 : 454,049.40 = 78,040.64 : x
  2. Step 2: Convert to fraction form
    302,682.20/454,049.40 = 78,040.64/x
  3. Step 3: Cross multiply
    302,682.20x = 454,049.40 × 78,040.64
  4. Step 4: Simplify right side
    302,682.20x = 35,434,305,767.62
  5. Step 5: Solve for x
    x = 35,434,305,767.62/302,682.20
  6. Step 6: Final answer
    x = 117,067.69

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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.