Finding the Fourth Proportional to 206,480.87, 309,655.69 and 140,345.99
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Solution
The fourth proportional to 206,480.87, 309,655.69 and 140,345.99 is: 210,474.38
Step by Step Solution
- Step 1: Write the proportion equation
206,480.87 : 309,655.69 = 140,345.99 : x - Step 2: Convert to fraction form
206,480.87/309,655.69 = 140,345.99/x - Step 3: Cross multiply
206,480.87x = 309,655.69 × 140,345.99 - Step 4: Simplify right side
206,480.87x = 43,458,932,473.04 - Step 5: Solve for x
x = 43,458,932,473.04/206,480.87 - Step 6: Final answer
x = 210,474.38
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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.