Home / 279,942,003.40-419,913,005.10-198,312,665.80

Finding the Fourth Proportional to 279,942,003.40, 419,913,005.10 and 198,312,665.80

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Solution

The fourth proportional to 279,942,003.40, 419,913,005.10 and 198,312,665.80 is: 297,468,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,942,003.40 : 419,913,005.10 = 198,312,665.80 : x
  2. Step 2: Convert to fraction form
    279,942,003.40/419,913,005.10 = 198,312,665.80/x
  3. Step 3: Cross multiply
    279,942,003.40x = 419,913,005.10 × 198,312,665.80
  4. Step 4: Simplify right side
    279,942,003.40x = 83,274,067,445,470,000
  5. Step 5: Solve for x
    x = 83,274,067,445,470,000/279,942,003.40
  6. Step 6: Final answer
    x = 297,468,998.70

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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.