Home / 279,936,035.15-419,904,052.73-85,877,401.55

Finding the Fourth Proportional to 279,936,035.15, 419,904,052.73 and 85,877,401.55

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Solution

The fourth proportional to 279,936,035.15, 419,904,052.73 and 85,877,401.55 is: 128,816,102.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,035.15 : 419,904,052.73 = 85,877,401.55 : x
  2. Step 2: Convert to fraction form
    279,936,035.15/419,904,052.73 = 85,877,401.55/x
  3. Step 3: Cross multiply
    279,936,035.15x = 419,904,052.73 × 85,877,401.55
  4. Step 4: Simplify right side
    279,936,035.15x = 36,060,268,948,766,584
  5. Step 5: Solve for x
    x = 36,060,268,948,766,584/279,936,035.15
  6. Step 6: Final answer
    x = 128,816,102.33

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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.