Finding the Fourth Proportional to 211,857.21, 292,413.87 and 121,265.70
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Solution
The fourth proportional to 211,857.21, 292,413.87 and 121,265.70 is: 167,375.81
Step by Step Solution
- Step 1: Write the proportion equation
211,857.21 : 292,413.87 = 121,265.70 : x - Step 2: Convert to fraction form
211,857.21/292,413.87 = 121,265.70/x - Step 3: Cross multiply
211,857.21x = 292,413.87 × 121,265.70 - Step 4: Simplify right side
211,857.21x = 35,459,772,635.26 - Step 5: Solve for x
x = 35,459,772,635.26/211,857.21 - Step 6: Final answer
x = 167,375.81
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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.