Finding the Fourth Proportional to 222,431.68, 306,957.21 and 120,457.23
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Solution
The fourth proportional to 222,431.68, 306,957.21 and 120,457.23 is: 166,231.79
Step by Step Solution
- Step 1: Write the proportion equation
222,431.68 : 306,957.21 = 120,457.23 : x - Step 2: Convert to fraction form
222,431.68/306,957.21 = 120,457.23/x - Step 3: Cross multiply
222,431.68x = 306,957.21 × 120,457.23 - Step 4: Simplify right side
222,431.68x = 36,975,215,245.13 - Step 5: Solve for x
x = 36,975,215,245.13/222,431.68 - Step 6: Final answer
x = 166,231.79
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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.