Home / 281,450,756.72-422,170,156.20-76,978,832.24

Finding the Fourth Proportional to 281,450,756.72, 422,170,156.20 and 76,978,832.24

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Solution

The fourth proportional to 281,450,756.72, 422,170,156.20 and 76,978,832.24 is: 115,466,613.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,450,756.72 : 422,170,156.20 = 76,978,832.24 : x
  2. Step 2: Convert to fraction form
    281,450,756.72/422,170,156.20 = 76,978,832.24/x
  3. Step 3: Cross multiply
    281,450,756.72x = 422,170,156.20 × 76,978,832.24
  4. Step 4: Simplify right side
    281,450,756.72x = 32,498,165,630,854,392
  5. Step 5: Solve for x
    x = 32,498,165,630,854,392/281,450,756.72
  6. Step 6: Final answer
    x = 115,466,613.09

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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.