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Finding the Fourth Proportional to 225,999.75, 311,879.67 and 125,397.75

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Solution

The fourth proportional to 225,999.75, 311,879.67 and 125,397.75 is: 173,048.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,999.75 : 311,879.67 = 125,397.75 : x
  2. Step 2: Convert to fraction form
    225,999.75/311,879.67 = 125,397.75/x
  3. Step 3: Cross multiply
    225,999.75x = 311,879.67 × 125,397.75
  4. Step 4: Simplify right side
    225,999.75x = 39,109,008,888.74
  5. Step 5: Solve for x
    x = 39,109,008,888.74/225,999.75
  6. Step 6: Final answer
    x = 173,048.90

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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.