Home / 279,936,019.60-419,904,029.40-210,959,789.20

Finding the Fourth Proportional to 279,936,019.60, 419,904,029.40 and 210,959,789.20

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Solution

The fourth proportional to 279,936,019.60, 419,904,029.40 and 210,959,789.20 is: 316,439,683.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,019.60 : 419,904,029.40 = 210,959,789.20 : x
  2. Step 2: Convert to fraction form
    279,936,019.60/419,904,029.40 = 210,959,789.20/x
  3. Step 3: Cross multiply
    279,936,019.60x = 419,904,029.40 × 210,959,789.20
  4. Step 4: Simplify right side
    279,936,019.60x = 88,582,865,526,454,592
  5. Step 5: Solve for x
    x = 88,582,865,526,454,592/279,936,019.60
  6. Step 6: Final answer
    x = 316,439,683.80

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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.