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Finding the Fourth Proportional to 225,453.46, 311,122.86 and 128,654.83

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Solution

The fourth proportional to 225,453.46, 311,122.86 and 128,654.83 is: 177,542.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,453.46 : 311,122.86 = 128,654.83 : x
  2. Step 2: Convert to fraction form
    225,453.46/311,122.86 = 128,654.83/x
  3. Step 3: Cross multiply
    225,453.46x = 311,122.86 × 128,654.83
  4. Step 4: Simplify right side
    225,453.46x = 40,027,458,662.41
  5. Step 5: Solve for x
    x = 40,027,458,662.41/225,453.46
  6. Step 6: Final answer
    x = 177,542.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.