Finding the Fourth Proportional to 248,331,413.21, 342,707,922.47 and 138,323,174.81
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Solution
The fourth proportional to 248,331,413.21, 342,707,922.47 and 138,323,174.81 is: 190,891,870.08
Step by Step Solution
- Step 1: Write the proportion equation
248,331,413.21 : 342,707,922.47 = 138,323,174.81 : x - Step 2: Convert to fraction form
248,331,413.21/342,707,922.47 = 138,323,174.81/x - Step 3: Cross multiply
248,331,413.21x = 342,707,922.47 × 138,323,174.81 - Step 4: Simplify right side
248,331,413.21x = 47,404,447,867,222,008 - Step 5: Solve for x
x = 47,404,447,867,222,008/248,331,413.21 - Step 6: Final answer
x = 190,891,870.08
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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.