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Finding the Fourth Proportional to 288,467.92, 400,122.46 and 280,795.60

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Solution

The fourth proportional to 288,467.92, 400,122.46 and 280,795.60 is: 389,480.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,467.92 : 400,122.46 = 280,795.60 : x
  2. Step 2: Convert to fraction form
    288,467.92/400,122.46 = 280,795.60/x
  3. Step 3: Cross multiply
    288,467.92x = 400,122.46 × 280,795.60
  4. Step 4: Simplify right side
    288,467.92x = 112,352,626,229.18
  5. Step 5: Solve for x
    x = 112,352,626,229.18/288,467.92
  6. Step 6: Final answer
    x = 389,480.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.