Finding the Fourth Proportional to 397,716.12, 596,487.78 and 131,413.56
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Solution
The fourth proportional to 397,716.12, 596,487.78 and 131,413.56 is: 197,091.79
Step by Step Solution
- Step 1: Write the proportion equation
397,716.12 : 596,487.78 = 131,413.56 : x - Step 2: Convert to fraction form
397,716.12/596,487.78 = 131,413.56/x - Step 3: Cross multiply
397,716.12x = 596,487.78 × 131,413.56 - Step 4: Simplify right side
397,716.12x = 78,386,582,666.30 - Step 5: Solve for x
x = 78,386,582,666.30/397,716.12 - Step 6: Final answer
x = 197,091.79
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1.5x scale
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.