Finding the Fourth Proportional to 438,163.36, 604,286.90 and 285,146.48
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Solution
The fourth proportional to 438,163.36, 604,286.90 and 285,146.48 is: 393,255.80
Step by Step Solution
- Step 1: Write the proportion equation
438,163.36 : 604,286.90 = 285,146.48 : x - Step 2: Convert to fraction form
438,163.36/604,286.90 = 285,146.48/x - Step 3: Cross multiply
438,163.36x = 604,286.90 × 285,146.48 - Step 4: Simplify right side
438,163.36x = 172,310,282,445.11 - Step 5: Solve for x
x = 172,310,282,445.11/438,163.36 - Step 6: Final answer
x = 393,255.80
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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.