Finding the Fourth Proportional to 231,728.13, 347,594.28 and 91,486.75
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Solution
The fourth proportional to 231,728.13, 347,594.28 and 91,486.75 is: 137,230.95
Step by Step Solution
- Step 1: Write the proportion equation
231,728.13 : 347,594.28 = 91,486.75 : x - Step 2: Convert to fraction form
231,728.13/347,594.28 = 91,486.75/x - Step 3: Cross multiply
231,728.13x = 347,594.28 × 91,486.75 - Step 4: Simplify right side
231,728.13x = 31,800,270,995.79 - Step 5: Solve for x
x = 31,800,270,995.79/231,728.13 - Step 6: Final answer
x = 137,230.95
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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.