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Finding the Fourth Proportional to 408,978,035.70, 613,467,053.55 and 236,365,998.90

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Solution

The fourth proportional to 408,978,035.70, 613,467,053.55 and 236,365,998.90 is: 354,548,998.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,978,035.70 : 613,467,053.55 = 236,365,998.90 : x
  2. Step 2: Convert to fraction form
    408,978,035.70/613,467,053.55 = 236,365,998.90/x
  3. Step 3: Cross multiply
    408,978,035.70x = 613,467,053.55 × 236,365,998.90
  4. Step 4: Simplify right side
    408,978,035.70x = 145,002,752,904,585,536
  5. Step 5: Solve for x
    x = 145,002,752,904,585,536/408,978,035.70
  6. Step 6: Final answer
    x = 354,548,998.35

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Similar ratio
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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.