Finding the Fourth Proportional to 271,979.46, 407,969.12 and 84,990.96
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Solution
The fourth proportional to 271,979.46, 407,969.12 and 84,990.96 is: 127,486.42
Step by Step Solution
- Step 1: Write the proportion equation
271,979.46 : 407,969.12 = 84,990.96 : x - Step 2: Convert to fraction form
271,979.46/407,969.12 = 84,990.96/x - Step 3: Cross multiply
271,979.46x = 407,969.12 × 84,990.96 - Step 4: Simplify right side
271,979.46x = 34,673,687,371.63 - Step 5: Solve for x
x = 34,673,687,371.63/271,979.46 - Step 6: Final answer
x = 127,486.42
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.