Finding the Fourth Proportional to 290,644.11, 436,049.54 and 122,077.74
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Solution
The fourth proportional to 290,644.11, 436,049.54 and 122,077.74 is: 183,151.63
Step by Step Solution
- Step 1: Write the proportion equation
290,644.11 : 436,049.54 = 122,077.74 : x - Step 2: Convert to fraction form
290,644.11/436,049.54 = 122,077.74/x - Step 3: Cross multiply
290,644.11x = 436,049.54 × 122,077.74 - Step 4: Simplify right side
290,644.11x = 53,231,942,371.24 - Step 5: Solve for x
x = 53,231,942,371.24/290,644.11 - Step 6: Final answer
x = 183,151.63
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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.