Home / 217,067.20-325,600.80-76,807.60

Finding the Fourth Proportional to 217,067.20, 325,600.80 and 76,807.60

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Solution

The fourth proportional to 217,067.20, 325,600.80 and 76,807.60 is: 115,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,067.20 : 325,600.80 = 76,807.60 : x
  2. Step 2: Convert to fraction form
    217,067.20/325,600.80 = 76,807.60/x
  3. Step 3: Cross multiply
    217,067.20x = 325,600.80 × 76,807.60
  4. Step 4: Simplify right side
    217,067.20x = 25,008,616,006.08
  5. Step 5: Solve for x
    x = 25,008,616,006.08/217,067.20
  6. Step 6: Final answer
    x = 115,211.40

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1.5x scale

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.