Finding the Fourth Proportional to 285,414.18, 428,207.70 and 107,975.58
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Solution
The fourth proportional to 285,414.18, 428,207.70 and 107,975.58 is: 161,996.07
Step by Step Solution
- Step 1: Write the proportion equation
285,414.18 : 428,207.70 = 107,975.58 : x - Step 2: Convert to fraction form
285,414.18/428,207.70 = 107,975.58/x - Step 3: Cross multiply
285,414.18x = 428,207.70 × 107,975.58 - Step 4: Simplify right side
285,414.18x = 46,235,974,767.97 - Step 5: Solve for x
x = 46,235,974,767.97/285,414.18 - Step 6: Final answer
x = 161,996.07
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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.