Finding the Fourth Proportional to 305,413.35, 455,640.15 and 288,879.63
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Solution
The fourth proportional to 305,413.35, 455,640.15 and 288,879.63 is: 430,973.82
Step by Step Solution
- Step 1: Write the proportion equation
305,413.35 : 455,640.15 = 288,879.63 : x - Step 2: Convert to fraction form
305,413.35/455,640.15 = 288,879.63/x - Step 3: Cross multiply
305,413.35x = 455,640.15 × 288,879.63 - Step 4: Simplify right side
305,413.35x = 131,625,159,882.77 - Step 5: Solve for x
x = 131,625,159,882.77/305,413.35 - Step 6: Final answer
x = 430,973.82
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.