Finding the Fourth Proportional to 218,557.68, 327,595.92 and 85,413.12
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Solution
The fourth proportional to 218,557.68, 327,595.92 and 85,413.12 is: 128,025.65
Step by Step Solution
- Step 1: Write the proportion equation
218,557.68 : 327,595.92 = 85,413.12 : x - Step 2: Convert to fraction form
218,557.68/327,595.92 = 85,413.12/x - Step 3: Cross multiply
218,557.68x = 327,595.92 × 85,413.12 - Step 4: Simplify right side
218,557.68x = 27,980,989,626.47 - Step 5: Solve for x
x = 27,980,989,626.47/218,557.68 - Step 6: Final answer
x = 128,025.65
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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.