Home / 306,140.78-422,438.19-181,942.42

Finding the Fourth Proportional to 306,140.78, 422,438.19 and 181,942.42

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Solution

The fourth proportional to 306,140.78, 422,438.19 and 181,942.42 is: 251,059.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,140.78 : 422,438.19 = 181,942.42 : x
  2. Step 2: Convert to fraction form
    306,140.78/422,438.19 = 181,942.42/x
  3. Step 3: Cross multiply
    306,140.78x = 422,438.19 × 181,942.42
  4. Step 4: Simplify right side
    306,140.78x = 76,859,425,532.92
  5. Step 5: Solve for x
    x = 76,859,425,532.92/306,140.78
  6. Step 6: Final answer
    x = 251,059.09

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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.