Home / 279,936,008.40-419,904,012.60-126,587,067.60

Finding the Fourth Proportional to 279,936,008.40, 419,904,012.60 and 126,587,067.60

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Solution

The fourth proportional to 279,936,008.40, 419,904,012.60 and 126,587,067.60 is: 189,880,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,008.40 : 419,904,012.60 = 126,587,067.60 : x
  2. Step 2: Convert to fraction form
    279,936,008.40/419,904,012.60 = 126,587,067.60/x
  3. Step 3: Cross multiply
    279,936,008.40x = 419,904,012.60 × 126,587,067.60
  4. Step 4: Simplify right side
    279,936,008.40x = 53,154,417,628,507,456
  5. Step 5: Solve for x
    x = 53,154,417,628,507,456/279,936,008.40
  6. Step 6: Final answer
    x = 189,880,601.40

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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.