Finding the Fourth Proportional to 217,641.87, 300,375.09 and 122,153.79
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Solution
The fourth proportional to 217,641.87, 300,375.09 and 122,153.79 is: 168,588.68
Step by Step Solution
- Step 1: Write the proportion equation
217,641.87 : 300,375.09 = 122,153.79 : x - Step 2: Convert to fraction form
217,641.87/300,375.09 = 122,153.79/x - Step 3: Cross multiply
217,641.87x = 300,375.09 × 122,153.79 - Step 4: Simplify right side
217,641.87x = 36,691,955,665.09 - Step 5: Solve for x
x = 36,691,955,665.09/217,641.87 - Step 6: Final answer
x = 168,588.68
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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.