Finding the Fourth Proportional to 312,413.70, 431,132.95 and 169,173.75
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Solution
The fourth proportional to 312,413.70, 431,132.95 and 169,173.75 is: 233,460.88
Step by Step Solution
- Step 1: Write the proportion equation
312,413.70 : 431,132.95 = 169,173.75 : x - Step 2: Convert to fraction form
312,413.70/431,132.95 = 169,173.75/x - Step 3: Cross multiply
312,413.70x = 431,132.95 × 169,173.75 - Step 4: Simplify right side
312,413.70x = 72,936,375,744.40 - Step 5: Solve for x
x = 72,936,375,744.40/312,413.70 - Step 6: Final answer
x = 233,460.88
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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.