Finding the Fourth Proportional to 221,317.48, 305,413.86 and 120,716.20
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Solution
The fourth proportional to 221,317.48, 305,413.86 and 120,716.20 is: 166,586.03
Step by Step Solution
- Step 1: Write the proportion equation
221,317.48 : 305,413.86 = 120,716.20 : x - Step 2: Convert to fraction form
221,317.48/305,413.86 = 120,716.20/x - Step 3: Cross multiply
221,317.48x = 305,413.86 × 120,716.20 - Step 4: Simplify right side
221,317.48x = 36,868,400,606.53 - Step 5: Solve for x
x = 36,868,400,606.53/221,317.48 - Step 6: Final answer
x = 166,586.03
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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.