Finding the Fourth Proportional to 216,738.94, 299,129.88 and 121,252.09
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Solution
The fourth proportional to 216,738.94, 299,129.88 and 121,252.09 is: 167,344.75
Step by Step Solution
- Step 1: Write the proportion equation
216,738.94 : 299,129.88 = 121,252.09 : x - Step 2: Convert to fraction form
216,738.94/299,129.88 = 121,252.09/x - Step 3: Cross multiply
216,738.94x = 299,129.88 × 121,252.09 - Step 4: Simplify right side
216,738.94x = 36,270,123,131.45 - Step 5: Solve for x
x = 36,270,123,131.45/216,738.94 - Step 6: Final answer
x = 167,344.75
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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.