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Finding the Fourth Proportional to 203,255.91, 304,760.74 and 90,915.19

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Solution

The fourth proportional to 203,255.91, 304,760.74 and 90,915.19 is: 136,317.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,255.91 : 304,760.74 = 90,915.19 : x
  2. Step 2: Convert to fraction form
    203,255.91/304,760.74 = 90,915.19/x
  3. Step 3: Cross multiply
    203,255.91x = 304,760.74 × 90,915.19
  4. Step 4: Simplify right side
    203,255.91x = 27,707,380,581.64
  5. Step 5: Solve for x
    x = 27,707,380,581.64/203,255.91
  6. Step 6: Final answer
    x = 136,317.71

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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.