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Finding the Fourth Proportional to 225,208.11, 310,899.71 and 129,696.36

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Solution

The fourth proportional to 225,208.11, 310,899.71 and 129,696.36 is: 179,045.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,208.11 : 310,899.71 = 129,696.36 : x
  2. Step 2: Convert to fraction form
    225,208.11/310,899.71 = 129,696.36/x
  3. Step 3: Cross multiply
    225,208.11x = 310,899.71 × 129,696.36
  4. Step 4: Simplify right side
    225,208.11x = 40,322,560,063.57
  5. Step 5: Solve for x
    x = 40,322,560,063.57/225,208.11
  6. Step 6: Final answer
    x = 179,045.77

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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.