Home / 281,450,820.72-422,170,252.20-76,978,896.24

Finding the Fourth Proportional to 281,450,820.72, 422,170,252.20 and 76,978,896.24

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Solution

The fourth proportional to 281,450,820.72, 422,170,252.20 and 76,978,896.24 is: 115,466,709.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,450,820.72 : 422,170,252.20 = 76,978,896.24 : x
  2. Step 2: Convert to fraction form
    281,450,820.72/422,170,252.20 = 76,978,896.24/x
  3. Step 3: Cross multiply
    281,450,820.72x = 422,170,252.20 × 76,978,896.24
  4. Step 4: Simplify right side
    281,450,820.72x = 32,498,200,039,718,428
  5. Step 5: Solve for x
    x = 32,498,200,039,718,428/281,450,820.72
  6. Step 6: Final answer
    x = 115,466,709.09

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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.