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Finding the Fourth Proportional to 363,998,966.70, 545,998,450.05 and 145,683,003.90

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Solution

The fourth proportional to 363,998,966.70, 545,998,450.05 and 145,683,003.90 is: 218,524,505.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,998,966.70 : 545,998,450.05 = 145,683,003.90 : x
  2. Step 2: Convert to fraction form
    363,998,966.70/545,998,450.05 = 145,683,003.90/x
  3. Step 3: Cross multiply
    363,998,966.70x = 545,998,450.05 × 145,683,003.90
  4. Step 4: Simplify right side
    363,998,966.70x = 79,542,694,328,028,096
  5. Step 5: Solve for x
    x = 79,542,694,328,028,096/363,998,966.70
  6. Step 6: Final answer
    x = 218,524,505.85

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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.