Finding the Fourth Proportional to 289,773.76, 434,660.88 and 79,413.28
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Solution
The fourth proportional to 289,773.76, 434,660.88 and 79,413.28 is: 119,119.99
Step by Step Solution
- Step 1: Write the proportion equation
289,773.76 : 434,660.88 = 79,413.28 : x - Step 2: Convert to fraction form
289,773.76/434,660.88 = 79,413.28/x - Step 3: Cross multiply
289,773.76x = 434,660.88 × 79,413.28 - Step 4: Simplify right side
289,773.76x = 34,517,846,168.49 - Step 5: Solve for x
x = 34,517,846,168.49/289,773.76 - Step 6: Final answer
x = 119,119.99
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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.