Home / 257,067.20-385,457.76-79,524.80

Finding the Fourth Proportional to 257,067.20, 385,457.76 and 79,524.80

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Solution

The fourth proportional to 257,067.20, 385,457.76 and 79,524.80 is: 119,242.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,067.20 : 385,457.76 = 79,524.80 : x
  2. Step 2: Convert to fraction form
    257,067.20/385,457.76 = 79,524.80/x
  3. Step 3: Cross multiply
    257,067.20x = 385,457.76 × 79,524.80
  4. Step 4: Simplify right side
    257,067.20x = 30,653,451,272.45
  5. Step 5: Solve for x
    x = 30,653,451,272.45/257,067.20
  6. Step 6: Final answer
    x = 119,242.95

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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.