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Finding the Fourth Proportional to 225,351.05, 310,984.72 and 129,855.29

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Solution

The fourth proportional to 225,351.05, 310,984.72 and 129,855.29 is: 179,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,351.05 : 310,984.72 = 129,855.29 : x
  2. Step 2: Convert to fraction form
    225,351.05/310,984.72 = 129,855.29/x
  3. Step 3: Cross multiply
    225,351.05x = 310,984.72 × 129,855.29
  4. Step 4: Simplify right side
    225,351.05x = 40,383,009,121.61
  5. Step 5: Solve for x
    x = 40,383,009,121.61/225,351.05
  6. Step 6: Final answer
    x = 179,200.45

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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.