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Finding the Fourth Proportional to 225,644.97, 311,421.15 and 130,149.57

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Solution

The fourth proportional to 225,644.97, 311,421.15 and 130,149.57 is: 179,624.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,644.97 : 311,421.15 = 130,149.57 : x
  2. Step 2: Convert to fraction form
    225,644.97/311,421.15 = 130,149.57/x
  3. Step 3: Cross multiply
    225,644.97x = 311,421.15 × 130,149.57
  4. Step 4: Simplify right side
    225,644.97x = 40,531,328,761.41
  5. Step 5: Solve for x
    x = 40,531,328,761.41/225,644.97
  6. Step 6: Final answer
    x = 179,624.34

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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.