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Finding the Fourth Proportional to 203,471.20, 305,206.80 and 170,228.80

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Solution

The fourth proportional to 203,471.20, 305,206.80 and 170,228.80 is: 255,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,471.20 : 305,206.80 = 170,228.80 : x
  2. Step 2: Convert to fraction form
    203,471.20/305,206.80 = 170,228.80/x
  3. Step 3: Cross multiply
    203,471.20x = 305,206.80 × 170,228.80
  4. Step 4: Simplify right side
    203,471.20x = 51,954,987,315.84
  5. Step 5: Solve for x
    x = 51,954,987,315.84/203,471.20
  6. Step 6: Final answer
    x = 255,343.20

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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.