Finding the Fourth Proportional to 223,286.18, 308,138.42 and 121,313.66
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Solution
The fourth proportional to 223,286.18, 308,138.42 and 121,313.66 is: 167,414.75
Step by Step Solution
- Step 1: Write the proportion equation
223,286.18 : 308,138.42 = 121,313.66 : x - Step 2: Convert to fraction form
223,286.18/308,138.42 = 121,313.66/x - Step 3: Cross multiply
223,286.18x = 308,138.42 × 121,313.66 - Step 4: Simplify right side
223,286.18x = 37,381,399,516.82 - Step 5: Solve for x
x = 37,381,399,516.82/223,286.18 - Step 6: Final answer
x = 167,414.75
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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.