Finding the Fourth Proportional to 428,268.70, 642,184.35 and 158,383.18
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Solution
The fourth proportional to 428,268.70, 642,184.35 and 158,383.18 is: 237,493.89
Step by Step Solution
- Step 1: Write the proportion equation
428,268.70 : 642,184.35 = 158,383.18 : x - Step 2: Convert to fraction form
428,268.70/642,184.35 = 158,383.18/x - Step 3: Cross multiply
428,268.70x = 642,184.35 × 158,383.18 - Step 4: Simplify right side
428,268.70x = 101,711,199,499.23 - Step 5: Solve for x
x = 101,711,199,499.23/428,268.70 - Step 6: Final answer
x = 237,493.89
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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.