Home / 217,519.64-300,179.15-122,028.38

Finding the Fourth Proportional to 217,519.64, 300,179.15 and 122,028.38

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Solution

The fourth proportional to 217,519.64, 300,179.15 and 122,028.38 is: 168,400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,519.64 : 300,179.15 = 122,028.38 : x
  2. Step 2: Convert to fraction form
    217,519.64/300,179.15 = 122,028.38/x
  3. Step 3: Cross multiply
    217,519.64x = 300,179.15 × 122,028.38
  4. Step 4: Simplify right side
    217,519.64x = 36,630,375,867.79
  5. Step 5: Solve for x
    x = 36,630,375,867.79/217,519.64
  6. Step 6: Final answer
    x = 168,400.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.