Home / 279,936,016.40-419,904,024.60-142,186,509.20

Finding the Fourth Proportional to 279,936,016.40, 419,904,024.60 and 142,186,509.20

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Solution

The fourth proportional to 279,936,016.40, 419,904,024.60 and 142,186,509.20 is: 213,279,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,016.40 : 419,904,024.60 = 142,186,509.20 : x
  2. Step 2: Convert to fraction form
    279,936,016.40/419,904,024.60 = 142,186,509.20/x
  3. Step 3: Cross multiply
    279,936,016.40x = 419,904,024.60 × 142,186,509.20
  4. Step 4: Simplify right side
    279,936,016.40x = 59,704,687,456,904,928
  5. Step 5: Solve for x
    x = 59,704,687,456,904,928/279,936,016.40
  6. Step 6: Final answer
    x = 213,279,763.80

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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.