Finding the Fourth Proportional to 306,105.96, 422,405.73 and 170,131.08
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Solution
The fourth proportional to 306,105.96, 422,405.73 and 170,131.08 is: 234,769.50
Step by Step Solution
- Step 1: Write the proportion equation
306,105.96 : 422,405.73 = 170,131.08 : x - Step 2: Convert to fraction form
306,105.96/422,405.73 = 170,131.08/x - Step 3: Cross multiply
306,105.96x = 422,405.73 × 170,131.08 - Step 4: Simplify right side
306,105.96x = 71,864,343,043.09 - Step 5: Solve for x
x = 71,864,343,043.09/306,105.96 - Step 6: Final answer
x = 234,769.50
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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.