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Finding the Fourth Proportional to 257,427.60, 385,266.60 and 225,934.80

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Solution

The fourth proportional to 257,427.60, 385,266.60 and 225,934.80 is: 338,134.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,427.60 : 385,266.60 = 225,934.80 : x
  2. Step 2: Convert to fraction form
    257,427.60/385,266.60 = 225,934.80/x
  3. Step 3: Cross multiply
    257,427.60x = 385,266.60 × 225,934.80
  4. Step 4: Simplify right side
    257,427.60x = 87,045,132,217.68
  5. Step 5: Solve for x
    x = 87,045,132,217.68/257,427.60
  6. Step 6: Final answer
    x = 338,134.42

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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.