Finding the Fourth Proportional to 287,936.88, 397,138.68 and 211,431.96
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Solution
The fourth proportional to 287,936.88, 397,138.68 and 211,431.96 is: 291,618.81
Step by Step Solution
- Step 1: Write the proportion equation
287,936.88 : 397,138.68 = 211,431.96 : x - Step 2: Convert to fraction form
287,936.88/397,138.68 = 211,431.96/x - Step 3: Cross multiply
287,936.88x = 397,138.68 × 211,431.96 - Step 4: Simplify right side
287,936.88x = 83,967,809,504.21 - Step 5: Solve for x
x = 83,967,809,504.21/287,936.88 - Step 6: Final answer
x = 291,618.81
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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.