Home / 279,936,310.20-419,904,465.30-210,400,207.80

Finding the Fourth Proportional to 279,936,310.20, 419,904,465.30 and 210,400,207.80

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Solution

The fourth proportional to 279,936,310.20, 419,904,465.30 and 210,400,207.80 is: 315,600,311.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,310.20 : 419,904,465.30 = 210,400,207.80 : x
  2. Step 2: Convert to fraction form
    279,936,310.20/419,904,465.30 = 210,400,207.80/x
  3. Step 3: Cross multiply
    279,936,310.20x = 419,904,465.30 × 210,400,207.80
  4. Step 4: Simplify right side
    279,936,310.20x = 88,347,986,755,267,904
  5. Step 5: Solve for x
    x = 88,347,986,755,267,904/279,936,310.20
  6. Step 6: Final answer
    x = 315,600,311.70

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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.