Home / 279,919,717.28-419,831,721.12-75,399,962.88

Finding the Fourth Proportional to 279,919,717.28, 419,831,721.12 and 75,399,962.88

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Solution

The fourth proportional to 279,919,717.28, 419,831,721.12 and 75,399,962.88 is: 113,087,054.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,919,717.28 : 419,831,721.12 = 75,399,962.88 : x
  2. Step 2: Convert to fraction form
    279,919,717.28/419,831,721.12 = 75,399,962.88/x
  3. Step 3: Cross multiply
    279,919,717.28x = 419,831,721.12 × 75,399,962.88
  4. Step 4: Simplify right side
    279,919,717.28x = 31,655,296,188,294,512
  5. Step 5: Solve for x
    x = 31,655,296,188,294,512/279,919,717.28
  6. Step 6: Final answer
    x = 113,087,054.02

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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.