Finding the Fourth Proportional to 218,119.62, 301,000.74 and 121,321.38
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Solution
The fourth proportional to 218,119.62, 301,000.74 and 121,321.38 is: 167,421.09
Step by Step Solution
- Step 1: Write the proportion equation
218,119.62 : 301,000.74 = 121,321.38 : x - Step 2: Convert to fraction form
218,119.62/301,000.74 = 121,321.38/x - Step 3: Cross multiply
218,119.62x = 301,000.74 × 121,321.38 - Step 4: Simplify right side
218,119.62x = 36,517,825,157.82 - Step 5: Solve for x
x = 36,517,825,157.82/218,119.62 - Step 6: Final answer
x = 167,421.09
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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.