Finding the Fourth Proportional to 393,042.96, 542,413.80 and 223,305.84
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Solution
The fourth proportional to 393,042.96, 542,413.80 and 223,305.84 is: 308,170.31
Step by Step Solution
- Step 1: Write the proportion equation
393,042.96 : 542,413.80 = 223,305.84 : x - Step 2: Convert to fraction form
393,042.96/542,413.80 = 223,305.84/x - Step 3: Cross multiply
393,042.96x = 542,413.80 × 223,305.84 - Step 4: Simplify right side
393,042.96x = 121,124,169,236.59 - Step 5: Solve for x
x = 121,124,169,236.59/393,042.96 - Step 6: Final answer
x = 308,170.31
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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.