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Finding the Fourth Proportional to 352,912.56, 486,880.92 and 201,928.56

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Solution

The fourth proportional to 352,912.56, 486,880.92 and 201,928.56 is: 278,582.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,912.56 : 486,880.92 = 201,928.56 : x
  2. Step 2: Convert to fraction form
    352,912.56/486,880.92 = 201,928.56/x
  3. Step 3: Cross multiply
    352,912.56x = 486,880.92 × 201,928.56
  4. Step 4: Simplify right side
    352,912.56x = 98,315,163,067.08
  5. Step 5: Solve for x
    x = 98,315,163,067.08/352,912.56
  6. Step 6: Final answer
    x = 278,582.22

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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.