Finding the Fourth Proportional to 211,910.61, 317,668.28 and 71,571.09
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Solution
The fourth proportional to 211,910.61, 317,668.28 and 71,571.09 is: 107,289.89
Step by Step Solution
- Step 1: Write the proportion equation
211,910.61 : 317,668.28 = 71,571.09 : x - Step 2: Convert to fraction form
211,910.61/317,668.28 = 71,571.09/x - Step 3: Cross multiply
211,910.61x = 317,668.28 × 71,571.09 - Step 4: Simplify right side
211,910.61x = 22,735,865,058.03 - Step 5: Solve for x
x = 22,735,865,058.03/211,910.61 - Step 6: Final answer
x = 107,289.89
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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.