Home / 279,936,312.20-419,904,468.30-210,400,209.80

Finding the Fourth Proportional to 279,936,312.20, 419,904,468.30 and 210,400,209.80

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Solution

The fourth proportional to 279,936,312.20, 419,904,468.30 and 210,400,209.80 is: 315,600,314.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,312.20 : 419,904,468.30 = 210,400,209.80 : x
  2. Step 2: Convert to fraction form
    279,936,312.20/419,904,468.30 = 210,400,209.80/x
  3. Step 3: Cross multiply
    279,936,312.20x = 419,904,468.30 × 210,400,209.80
  4. Step 4: Simplify right side
    279,936,312.20x = 88,347,988,226,277,456
  5. Step 5: Solve for x
    x = 88,347,988,226,277,456/279,936,312.20
  6. Step 6: Final answer
    x = 315,600,314.70

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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.