Finding the Fourth Proportional to 438,917.68, 605,718.84 and 247,939.12
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Solution
The fourth proportional to 438,917.68, 605,718.84 and 247,939.12 is: 342,163.01
Step by Step Solution
- Step 1: Write the proportion equation
438,917.68 : 605,718.84 = 247,939.12 : x - Step 2: Convert to fraction form
438,917.68/605,718.84 = 247,939.12/x - Step 3: Cross multiply
438,917.68x = 605,718.84 × 247,939.12 - Step 4: Simplify right side
438,917.68x = 150,181,396,157.02 - Step 5: Solve for x
x = 150,181,396,157.02/438,917.68 - Step 6: Final answer
x = 342,163.01
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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.