Home / 256,556.09-354,047.94-143,378.84

Finding the Fourth Proportional to 256,556.09, 354,047.94 and 143,378.84

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Solution

The fourth proportional to 256,556.09, 354,047.94 and 143,378.84 is: 197,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,556.09 : 354,047.94 = 143,378.84 : x
  2. Step 2: Convert to fraction form
    256,556.09/354,047.94 = 143,378.84/x
  3. Step 3: Cross multiply
    256,556.09x = 354,047.94 × 143,378.84
  4. Step 4: Simplify right side
    256,556.09x = 50,762,981,171.35
  5. Step 5: Solve for x
    x = 50,762,981,171.35/256,556.09
  6. Step 6: Final answer
    x = 197,863.10

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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.