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Finding the Fourth Proportional to 225,813.48, 311,636.61 and 125,211.48

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Solution

The fourth proportional to 225,813.48, 311,636.61 and 125,211.48 is: 172,799.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,813.48 : 311,636.61 = 125,211.48 : x
  2. Step 2: Convert to fraction form
    225,813.48/311,636.61 = 125,211.48/x
  3. Step 3: Cross multiply
    225,813.48x = 311,636.61 × 125,211.48
  4. Step 4: Simplify right side
    225,813.48x = 39,020,481,160.28
  5. Step 5: Solve for x
    x = 39,020,481,160.28/225,813.48
  6. Step 6: Final answer
    x = 172,799.61

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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.