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Finding the Fourth Proportional to 408,962.88, 613,448.20 and 255,135.60

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Solution

The fourth proportional to 408,962.88, 613,448.20 and 255,135.60 is: 382,705.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,962.88 : 613,448.20 = 255,135.60 : x
  2. Step 2: Convert to fraction form
    408,962.88/613,448.20 = 255,135.60/x
  3. Step 3: Cross multiply
    408,962.88x = 613,448.20 × 255,135.60
  4. Step 4: Simplify right side
    408,962.88x = 156,512,474,575.92
  5. Step 5: Solve for x
    x = 156,512,474,575.92/408,962.88
  6. Step 6: Final answer
    x = 382,705.82

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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.