Finding the Fourth Proportional to 285,553.80, 428,330.70 and 272,431.80
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Solution
The fourth proportional to 285,553.80, 428,330.70 and 272,431.80 is: 408,647.70
Step by Step Solution
- Step 1: Write the proportion equation
285,553.80 : 428,330.70 = 272,431.80 : x - Step 2: Convert to fraction form
285,553.80/428,330.70 = 272,431.80/x - Step 3: Cross multiply
285,553.80x = 428,330.70 × 272,431.80 - Step 4: Simplify right side
285,553.80x = 116,690,903,596.26 - Step 5: Solve for x
x = 116,690,903,596.26/285,553.80 - Step 6: Final answer
x = 408,647.70
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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.