Finding the Fourth Proportional to 221,364.24, 305,479.80 and 120,755.76
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Solution
The fourth proportional to 221,364.24, 305,479.80 and 120,755.76 is: 166,641.39
Step by Step Solution
- Step 1: Write the proportion equation
221,364.24 : 305,479.80 = 120,755.76 : x - Step 2: Convert to fraction form
221,364.24/305,479.80 = 120,755.76/x - Step 3: Cross multiply
221,364.24x = 305,479.80 × 120,755.76 - Step 4: Simplify right side
221,364.24x = 36,888,445,413.65 - Step 5: Solve for x
x = 36,888,445,413.65/221,364.24 - Step 6: Final answer
x = 166,641.39
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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.