Finding the Fourth Proportional to 324,047.20, 486,070.80 and 87,413.80
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Solution
The fourth proportional to 324,047.20, 486,070.80 and 87,413.80 is: 131,120.70
Step by Step Solution
- Step 1: Write the proportion equation
324,047.20 : 486,070.80 = 87,413.80 : x - Step 2: Convert to fraction form
324,047.20/486,070.80 = 87,413.80/x - Step 3: Cross multiply
324,047.20x = 486,070.80 × 87,413.80 - Step 4: Simplify right side
324,047.20x = 42,489,295,697.04 - Step 5: Solve for x
x = 42,489,295,697.04/324,047.20 - Step 6: Final answer
x = 131,120.70
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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.