Finding the Fourth Proportional to 216,872.58, 299,284.11 and 121,379.28
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Solution
The fourth proportional to 216,872.58, 299,284.11 and 121,379.28 is: 167,503.38
Step by Step Solution
- Step 1: Write the proportion equation
216,872.58 : 299,284.11 = 121,379.28 : x - Step 2: Convert to fraction form
216,872.58/299,284.11 = 121,379.28/x - Step 3: Cross multiply
216,872.58x = 299,284.11 × 121,379.28 - Step 4: Simplify right side
216,872.58x = 36,326,889,787.24 - Step 5: Solve for x
x = 36,326,889,787.24/216,872.58 - Step 6: Final answer
x = 167,503.38
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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.