Finding the Fourth Proportional to 431,883.69, 647,216.59 and 203,936.09
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Solution
The fourth proportional to 431,883.69, 647,216.59 and 203,936.09 is: 305,616.59
Step by Step Solution
- Step 1: Write the proportion equation
431,883.69 : 647,216.59 = 203,936.09 : x - Step 2: Convert to fraction form
431,883.69/647,216.59 = 203,936.09/x - Step 3: Cross multiply
431,883.69x = 647,216.59 × 203,936.09 - Step 4: Simplify right side
431,883.69x = 131,990,819,728.05 - Step 5: Solve for x
x = 131,990,819,728.05/431,883.69 - Step 6: Final answer
x = 305,616.59
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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.