Finding the Fourth Proportional to 217,365.20, 299,976.36 and 121,867.28
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Solution
The fourth proportional to 217,365.20, 299,976.36 and 121,867.28 is: 168,183.79
Step by Step Solution
- Step 1: Write the proportion equation
217,365.20 : 299,976.36 = 121,867.28 : x - Step 2: Convert to fraction form
217,365.20/299,976.36 = 121,867.28/x - Step 3: Cross multiply
217,365.20x = 299,976.36 × 121,867.28 - Step 4: Simplify right side
217,365.20x = 36,557,303,057.50 - Step 5: Solve for x
x = 36,557,303,057.50/217,365.20 - Step 6: Final answer
x = 168,183.79
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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.