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Finding the Fourth Proportional to 225,460.23, 311,139.80 and 123,489.97

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Solution

The fourth proportional to 225,460.23, 311,139.80 and 123,489.97 is: 170,418.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,460.23 : 311,139.80 = 123,489.97 : x
  2. Step 2: Convert to fraction form
    225,460.23/311,139.80 = 123,489.97/x
  3. Step 3: Cross multiply
    225,460.23x = 311,139.80 × 123,489.97
  4. Step 4: Simplify right side
    225,460.23x = 38,422,643,635.59
  5. Step 5: Solve for x
    x = 38,422,643,635.59/225,460.23
  6. Step 6: Final answer
    x = 170,418.72

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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.