Home / 279,936,743.80-419,905,115.70-178,152,014.20

Finding the Fourth Proportional to 279,936,743.80, 419,905,115.70 and 178,152,014.20

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Solution

The fourth proportional to 279,936,743.80, 419,905,115.70 and 178,152,014.20 is: 267,228,021.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,743.80 : 419,905,115.70 = 178,152,014.20 : x
  2. Step 2: Convert to fraction form
    279,936,743.80/419,905,115.70 = 178,152,014.20/x
  3. Step 3: Cross multiply
    279,936,743.80x = 419,905,115.70 × 178,152,014.20
  4. Step 4: Simplify right side
    279,936,743.80x = 74,806,942,134,839,040
  5. Step 5: Solve for x
    x = 74,806,942,134,839,040/279,936,743.80
  6. Step 6: Final answer
    x = 267,228,021.30

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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.