Finding the Fourth Proportional to 235,990.98, 325,665.95 and 128,561.09
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Solution
The fourth proportional to 235,990.98, 325,665.95 and 128,561.09 is: 177,413.42
Step by Step Solution
- Step 1: Write the proportion equation
235,990.98 : 325,665.95 = 128,561.09 : x - Step 2: Convert to fraction form
235,990.98/325,665.95 = 128,561.09/x - Step 3: Cross multiply
235,990.98x = 325,665.95 × 128,561.09 - Step 4: Simplify right side
235,990.98x = 41,867,967,236.75 - Step 5: Solve for x
x = 41,867,967,236.75/235,990.98 - Step 6: Final answer
x = 177,413.42
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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.