Finding the Fourth Proportional to 211,169.26, 291,413.66 and 115,679.40
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Solution
The fourth proportional to 211,169.26, 291,413.66 and 115,679.40 is: 159,637.62
Step by Step Solution
- Step 1: Write the proportion equation
211,169.26 : 291,413.66 = 115,679.40 : x - Step 2: Convert to fraction form
211,169.26/291,413.66 = 115,679.40/x - Step 3: Cross multiply
211,169.26x = 291,413.66 × 115,679.40 - Step 4: Simplify right side
211,169.26x = 33,710,557,340.60 - Step 5: Solve for x
x = 33,710,557,340.60/211,169.26 - Step 6: Final answer
x = 159,637.62
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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.