Home / 268,939.53-403,658.57-135,913.43

Finding the Fourth Proportional to 268,939.53, 403,658.57 and 135,913.43

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Solution

The fourth proportional to 268,939.53, 403,658.57 and 135,913.43 is: 203,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,939.53 : 403,658.57 = 135,913.43 : x
  2. Step 2: Convert to fraction form
    268,939.53/403,658.57 = 135,913.43/x
  3. Step 3: Cross multiply
    268,939.53x = 403,658.57 × 135,913.43
  4. Step 4: Simplify right side
    268,939.53x = 54,862,618,099.74
  5. Step 5: Solve for x
    x = 54,862,618,099.74/268,939.53
  6. Step 6: Final answer
    x = 203,996.11

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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.