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Finding the Fourth Proportional to 408,862.20, 613,050.30 and 251,203.80

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Solution

The fourth proportional to 408,862.20, 613,050.30 and 251,203.80 is: 376,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,862.20 : 613,050.30 = 251,203.80 : x
  2. Step 2: Convert to fraction form
    408,862.20/613,050.30 = 251,203.80/x
  3. Step 3: Cross multiply
    408,862.20x = 613,050.30 × 251,203.80
  4. Step 4: Simplify right side
    408,862.20x = 154,000,564,951.14
  5. Step 5: Solve for x
    x = 154,000,564,951.14/408,862.20
  6. Step 6: Final answer
    x = 376,656.40

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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.