Finding the Fourth Proportional to 306,356.11, 422,655.45 and 190,015.75
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Solution
The fourth proportional to 306,356.11, 422,655.45 and 190,015.75 is: 262,149.80
Step by Step Solution
- Step 1: Write the proportion equation
306,356.11 : 422,655.45 = 190,015.75 : x - Step 2: Convert to fraction form
306,356.11/422,655.45 = 190,015.75/x - Step 3: Cross multiply
306,356.11x = 422,655.45 × 190,015.75 - Step 4: Simplify right side
306,356.11x = 80,311,192,139.10 - Step 5: Solve for x
x = 80,311,192,139.10/306,356.11 - Step 6: Final answer
x = 262,149.80
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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.