Home / 256,514.03-353,982.12-143,336.78

Finding the Fourth Proportional to 256,514.03, 353,982.12 and 143,336.78

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Solution

The fourth proportional to 256,514.03, 353,982.12 and 143,336.78 is: 197,800.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,514.03 : 353,982.12 = 143,336.78 : x
  2. Step 2: Convert to fraction form
    256,514.03/353,982.12 = 143,336.78/x
  3. Step 3: Cross multiply
    256,514.03x = 353,982.12 × 143,336.78
  4. Step 4: Simplify right side
    256,514.03x = 50,738,657,258.37
  5. Step 5: Solve for x
    x = 50,738,657,258.37/256,514.03
  6. Step 6: Final answer
    x = 197,800.71

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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.