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Finding the Fourth Proportional to 225,728.37, 338,644.56 and 75,964.74

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Solution

The fourth proportional to 225,728.37, 338,644.56 and 75,964.74 is: 113,964.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,728.37 : 338,644.56 = 75,964.74 : x
  2. Step 2: Convert to fraction form
    225,728.37/338,644.56 = 75,964.74/x
  3. Step 3: Cross multiply
    225,728.37x = 338,644.56 × 75,964.74
  4. Step 4: Simplify right side
    225,728.37x = 25,725,044,967.77
  5. Step 5: Solve for x
    x = 25,725,044,967.77/225,728.37
  6. Step 6: Final answer
    x = 113,964.61

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1.5x scale

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.