Finding the Fourth Proportional to 306,207.31, 422,580.17 and 170,255.09
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Solution
The fourth proportional to 306,207.31, 422,580.17 and 170,255.09 is: 234,959.85
Step by Step Solution
- Step 1: Write the proportion equation
306,207.31 : 422,580.17 = 170,255.09 : x - Step 2: Convert to fraction form
306,207.31/422,580.17 = 170,255.09/x - Step 3: Cross multiply
306,207.31x = 422,580.17 × 170,255.09 - Step 4: Simplify right side
306,207.31x = 71,946,424,875.57 - Step 5: Solve for x
x = 71,946,424,875.57/306,207.31 - Step 6: Final answer
x = 234,959.85
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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.