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Finding the Fourth Proportional to 408,859.20, 613,045.80 and 251,200.80

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Solution

The fourth proportional to 408,859.20, 613,045.80 and 251,200.80 is: 376,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,859.20 : 613,045.80 = 251,200.80 : x
  2. Step 2: Convert to fraction form
    408,859.20/613,045.80 = 251,200.80/x
  3. Step 3: Cross multiply
    408,859.20x = 613,045.80 × 251,200.80
  4. Step 4: Simplify right side
    408,859.20x = 153,997,595,396.64
  5. Step 5: Solve for x
    x = 153,997,595,396.64/408,859.20
  6. Step 6: Final answer
    x = 376,651.90

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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.