Home / 279,478,011.45-419,221,362.12-82,761,324.02

Finding the Fourth Proportional to 279,478,011.45, 419,221,362.12 and 82,761,324.02

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Solution

The fourth proportional to 279,478,011.45, 419,221,362.12 and 82,761,324.02 is: 124,143,272.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,478,011.45 : 419,221,362.12 = 82,761,324.02 : x
  2. Step 2: Convert to fraction form
    279,478,011.45/419,221,362.12 = 82,761,324.02/x
  3. Step 3: Cross multiply
    279,478,011.45x = 419,221,362.12 × 82,761,324.02
  4. Step 4: Simplify right side
    279,478,011.45x = 34,695,314,984,969,296
  5. Step 5: Solve for x
    x = 34,695,314,984,969,296/279,478,011.45
  6. Step 6: Final answer
    x = 124,143,272.69

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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.