Finding the Fourth Proportional to 340,716.38, 469,751.91 and 279,236.26
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Solution
The fourth proportional to 340,716.38, 469,751.91 and 279,236.26 is: 384,988.15
Step by Step Solution
- Step 1: Write the proportion equation
340,716.38 : 469,751.91 = 279,236.26 : x - Step 2: Convert to fraction form
340,716.38/469,751.91 = 279,236.26/x - Step 3: Cross multiply
340,716.38x = 469,751.91 × 279,236.26 - Step 4: Simplify right side
340,716.38x = 131,171,766,016.31 - Step 5: Solve for x
x = 131,171,766,016.31/340,716.38 - Step 6: Final answer
x = 384,988.15
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1.5x scale
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.