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Finding the Fourth Proportional to 225,451.77, 311,128.14 and 123,481.53

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Solution

The fourth proportional to 225,451.77, 311,128.14 and 123,481.53 is: 170,407.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,451.77 : 311,128.14 = 123,481.53 : x
  2. Step 2: Convert to fraction form
    225,451.77/311,128.14 = 123,481.53/x
  3. Step 3: Cross multiply
    225,451.77x = 311,128.14 × 123,481.53
  4. Step 4: Simplify right side
    225,451.77x = 38,418,578,521.73
  5. Step 5: Solve for x
    x = 38,418,578,521.73/225,451.77
  6. Step 6: Final answer
    x = 170,407.08

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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.