Home / 217,921.75-326,979.65-111,249.29

Finding the Fourth Proportional to 217,921.75, 326,979.65 and 111,249.29

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Solution

The fourth proportional to 217,921.75, 326,979.65 and 111,249.29 is: 166,923.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,921.75 : 326,979.65 = 111,249.29 : x
  2. Step 2: Convert to fraction form
    217,921.75/326,979.65 = 111,249.29/x
  3. Step 3: Cross multiply
    217,921.75x = 326,979.65 × 111,249.29
  4. Step 4: Simplify right side
    217,921.75x = 36,376,255,002.52
  5. Step 5: Solve for x
    x = 36,376,255,002.52/217,921.75
  6. Step 6: Final answer
    x = 166,923.47

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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.