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Finding the Fourth Proportional to 408,863.20, 613,051.80 and 251,204.80

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Solution

The fourth proportional to 408,863.20, 613,051.80 and 251,204.80 is: 376,657.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,863.20 : 613,051.80 = 251,204.80 : x
  2. Step 2: Convert to fraction form
    408,863.20/613,051.80 = 251,204.80/x
  3. Step 3: Cross multiply
    408,863.20x = 613,051.80 × 251,204.80
  4. Step 4: Simplify right side
    408,863.20x = 154,001,554,808.64
  5. Step 5: Solve for x
    x = 154,001,554,808.64/408,863.20
  6. Step 6: Final answer
    x = 376,657.90

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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.