Home / 320,857.45-442,786.56-177,614.42

Finding the Fourth Proportional to 320,857.45, 442,786.56 and 177,614.42

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Solution

The fourth proportional to 320,857.45, 442,786.56 and 177,614.42 is: 245,109.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,857.45 : 442,786.56 = 177,614.42 : x
  2. Step 2: Convert to fraction form
    320,857.45/442,786.56 = 177,614.42/x
  3. Step 3: Cross multiply
    320,857.45x = 442,786.56 × 177,614.42
  4. Step 4: Simplify right side
    320,857.45x = 78,645,274,936.19
  5. Step 5: Solve for x
    x = 78,645,274,936.19/320,857.45
  6. Step 6: Final answer
    x = 245,109.71

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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.