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Finding the Fourth Proportional to 201,843.20, 302,635.20 and 83,561.60

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Solution

The fourth proportional to 201,843.20, 302,635.20 and 83,561.60 is: 125,288.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,843.20 : 302,635.20 = 83,561.60 : x
  2. Step 2: Convert to fraction form
    201,843.20/302,635.20 = 83,561.60/x
  3. Step 3: Cross multiply
    201,843.20x = 302,635.20 × 83,561.60
  4. Step 4: Simplify right side
    201,843.20x = 25,288,681,528.32
  5. Step 5: Solve for x
    x = 25,288,681,528.32/201,843.20
  6. Step 6: Final answer
    x = 125,288.75

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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.