Finding the Fourth Proportional to 215,902.14, 323,874.75 and 66,140.70
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Solution
The fourth proportional to 215,902.14, 323,874.75 and 66,140.70 is: 99,217.65
Step by Step Solution
- Step 1: Write the proportion equation
215,902.14 : 323,874.75 = 66,140.70 : x - Step 2: Convert to fraction form
215,902.14/323,874.75 = 66,140.70/x - Step 3: Cross multiply
215,902.14x = 323,874.75 × 66,140.70 - Step 4: Simplify right side
215,902.14x = 21,421,302,677.33 - Step 5: Solve for x
x = 21,421,302,677.33/215,902.14 - Step 6: Final answer
x = 99,217.65
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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.