Finding the Fourth Proportional to 326,145.70, 489,218.55 and 247,413.70
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Solution
The fourth proportional to 326,145.70, 489,218.55 and 247,413.70 is: 371,120.55
Step by Step Solution
- Step 1: Write the proportion equation
326,145.70 : 489,218.55 = 247,413.70 : x - Step 2: Convert to fraction form
326,145.70/489,218.55 = 247,413.70/x - Step 3: Cross multiply
326,145.70x = 489,218.55 × 247,413.70 - Step 4: Simplify right side
326,145.70x = 121,039,371,564.14 - Step 5: Solve for x
x = 121,039,371,564.14/326,145.70 - Step 6: Final answer
x = 371,120.55
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1.5x scale
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.