Finding the Fourth Proportional to 216,891.36, 299,310.03 and 121,398.08
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Solution
The fourth proportional to 216,891.36, 299,310.03 and 121,398.08 is: 167,529.32
Step by Step Solution
- Step 1: Write the proportion equation
216,891.36 : 299,310.03 = 121,398.08 : x - Step 2: Convert to fraction form
216,891.36/299,310.03 = 121,398.08/x - Step 3: Cross multiply
216,891.36x = 299,310.03 × 121,398.08 - Step 4: Simplify right side
216,891.36x = 36,335,661,470.19 - Step 5: Solve for x
x = 36,335,661,470.19/216,891.36 - Step 6: Final answer
x = 167,529.32
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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.