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Finding the Fourth Proportional to 225,396, 311,056.20 and 124,794

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Solution

The fourth proportional to 225,396, 311,056.20 and 124,794 is: 172,221.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,396 : 311,056.20 = 124,794 : x
  2. Step 2: Convert to fraction form
    225,396/311,056.20 = 124,794/x
  3. Step 3: Cross multiply
    225,396x = 311,056.20 × 124,794
  4. Step 4: Simplify right side
    225,396x = 38,817,947,422.80
  5. Step 5: Solve for x
    x = 38,817,947,422.80/225,396
  6. Step 6: Final answer
    x = 172,221.10

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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.