Finding the Fourth Proportional to 213,183.04, 319,413.23 and 128,765.84
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Solution
The fourth proportional to 213,183.04, 319,413.23 and 128,765.84 is: 192,930.52
Step by Step Solution
- Step 1: Write the proportion equation
213,183.04 : 319,413.23 = 128,765.84 : x - Step 2: Convert to fraction form
213,183.04/319,413.23 = 128,765.84/x - Step 3: Cross multiply
213,183.04x = 319,413.23 × 128,765.84 - Step 4: Simplify right side
213,183.04x = 41,129,513,488.29 - Step 5: Solve for x
x = 41,129,513,488.29/213,183.04 - Step 6: Final answer
x = 192,930.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.