Home / 279,936,587.80-419,904,881.70-211,912,139.80

Finding the Fourth Proportional to 279,936,587.80, 419,904,881.70 and 211,912,139.80

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Solution

The fourth proportional to 279,936,587.80, 419,904,881.70 and 211,912,139.80 is: 317,868,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,587.80 : 419,904,881.70 = 211,912,139.80 : x
  2. Step 2: Convert to fraction form
    279,936,587.80/419,904,881.70 = 211,912,139.80/x
  3. Step 3: Cross multiply
    279,936,587.80x = 419,904,881.70 × 211,912,139.80
  4. Step 4: Simplify right side
    279,936,587.80x = 88,982,941,993,512,864
  5. Step 5: Solve for x
    x = 88,982,941,993,512,864/279,936,587.80
  6. Step 6: Final answer
    x = 317,868,209.70

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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.