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Finding the Fourth Proportional to 225,338.81, 310,962.98 and 129,839.81

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Solution

The fourth proportional to 225,338.81, 310,962.98 and 129,839.81 is: 179,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,338.81 : 310,962.98 = 129,839.81 : x
  2. Step 2: Convert to fraction form
    225,338.81/310,962.98 = 129,839.81/x
  3. Step 3: Cross multiply
    225,338.81x = 310,962.98 × 129,839.81
  4. Step 4: Simplify right side
    225,338.81x = 40,375,373,010.02
  5. Step 5: Solve for x
    x = 40,375,373,010.02/225,338.81
  6. Step 6: Final answer
    x = 179,176.30

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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.