Finding the Fourth Proportional to 306,138.69, 422,539.94 and 170,220.29
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Solution
The fourth proportional to 306,138.69, 422,539.94 and 170,220.29 is: 234,942.11
Step by Step Solution
- Step 1: Write the proportion equation
306,138.69 : 422,539.94 = 170,220.29 : x - Step 2: Convert to fraction form
306,138.69/422,539.94 = 170,220.29/x - Step 3: Cross multiply
306,138.69x = 422,539.94 × 170,220.29 - Step 4: Simplify right side
306,138.69x = 71,924,869,436.23 - Step 5: Solve for x
x = 71,924,869,436.23/306,138.69 - Step 6: Final answer
x = 234,942.11
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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.