Finding the Fourth Proportional to 208,476.36, 287,699.18 and 122,413.05
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Solution
The fourth proportional to 208,476.36, 287,699.18 and 122,413.05 is: 168,931.06
Step by Step Solution
- Step 1: Write the proportion equation
208,476.36 : 287,699.18 = 122,413.05 : x - Step 2: Convert to fraction form
208,476.36/287,699.18 = 122,413.05/x - Step 3: Cross multiply
208,476.36x = 287,699.18 × 122,413.05 - Step 4: Simplify right side
208,476.36x = 35,218,133,494.23 - Step 5: Solve for x
x = 35,218,133,494.23/208,476.36 - Step 6: Final answer
x = 168,931.06
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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.