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Finding the Fourth Proportional to 408,843.20, 613,264.80 and 267,125.60

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Solution

The fourth proportional to 408,843.20, 613,264.80 and 267,125.60 is: 400,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,843.20 : 613,264.80 = 267,125.60 : x
  2. Step 2: Convert to fraction form
    408,843.20/613,264.80 = 267,125.60/x
  3. Step 3: Cross multiply
    408,843.20x = 613,264.80 × 267,125.60
  4. Step 4: Simplify right side
    408,843.20x = 163,818,727,658.88
  5. Step 5: Solve for x
    x = 163,818,727,658.88/408,843.20
  6. Step 6: Final answer
    x = 400,688.40

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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.