Finding the Fourth Proportional to 253,243.80, 379,668.69 and 126,819.09
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Solution
The fourth proportional to 253,243.80, 379,668.69 and 126,819.09 is: 190,129.98
Step by Step Solution
- Step 1: Write the proportion equation
253,243.80 : 379,668.69 = 126,819.09 : x - Step 2: Convert to fraction form
253,243.80/379,668.69 = 126,819.09/x - Step 3: Cross multiply
253,243.80x = 379,668.69 × 126,819.09 - Step 4: Simplify right side
253,243.80x = 48,149,237,767.29 - Step 5: Solve for x
x = 48,149,237,767.29/253,243.80 - Step 6: Final answer
x = 190,129.98
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.