Finding the Fourth Proportional to 290,990.49, 436,504.17 and 91,318.75
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Solution
The fourth proportional to 290,990.49, 436,504.17 and 91,318.75 is: 136,983.91
Step by Step Solution
- Step 1: Write the proportion equation
290,990.49 : 436,504.17 = 91,318.75 : x - Step 2: Convert to fraction form
290,990.49/436,504.17 = 91,318.75/x - Step 3: Cross multiply
290,990.49x = 436,504.17 × 91,318.75 - Step 4: Simplify right side
290,990.49x = 39,861,015,174.19 - Step 5: Solve for x
x = 39,861,015,174.19/290,990.49 - Step 6: Final answer
x = 136,983.91
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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.