Home / 279,936,761.60-419,905,142.40-177,816,108.80

Finding the Fourth Proportional to 279,936,761.60, 419,905,142.40 and 177,816,108.80

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Solution

The fourth proportional to 279,936,761.60, 419,905,142.40 and 177,816,108.80 is: 266,724,163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,761.60 : 419,905,142.40 = 177,816,108.80 : x
  2. Step 2: Convert to fraction form
    279,936,761.60/419,905,142.40 = 177,816,108.80/x
  3. Step 3: Cross multiply
    279,936,761.60x = 419,905,142.40 × 177,816,108.80
  4. Step 4: Simplify right side
    279,936,761.60x = 74,665,898,486,677,888
  5. Step 5: Solve for x
    x = 74,665,898,486,677,888/279,936,761.60
  6. Step 6: Final answer
    x = 266,724,163.20

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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.