Home / 207,939.80-311,909.70-185,778.20

Finding the Fourth Proportional to 207,939.80, 311,909.70 and 185,778.20

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Solution

The fourth proportional to 207,939.80, 311,909.70 and 185,778.20 is: 278,667.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,939.80 : 311,909.70 = 185,778.20 : x
  2. Step 2: Convert to fraction form
    207,939.80/311,909.70 = 185,778.20/x
  3. Step 3: Cross multiply
    207,939.80x = 311,909.70 × 185,778.20
  4. Step 4: Simplify right side
    207,939.80x = 57,946,022,628.54
  5. Step 5: Solve for x
    x = 57,946,022,628.54/207,939.80
  6. Step 6: Final answer
    x = 278,667.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.