Finding the Fourth Proportional to 398,413.26, 549,794.26 and 217,121.32
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Solution
The fourth proportional to 398,413.26, 549,794.26 and 217,121.32 is: 299,618.68
Step by Step Solution
- Step 1: Write the proportion equation
398,413.26 : 549,794.26 = 217,121.32 : x - Step 2: Convert to fraction form
398,413.26/549,794.26 = 217,121.32/x - Step 3: Cross multiply
398,413.26x = 549,794.26 × 217,121.32 - Step 4: Simplify right side
398,413.26x = 119,372,056,418.27 - Step 5: Solve for x
x = 119,372,056,418.27/398,413.26 - Step 6: Final answer
x = 299,618.68
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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.