Finding the Fourth Proportional to 397,857.60, 548,727.84 and 281,365.20
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Solution
The fourth proportional to 397,857.60, 548,727.84 and 281,365.20 is: 388,060.75
Step by Step Solution
- Step 1: Write the proportion equation
397,857.60 : 548,727.84 = 281,365.20 : x - Step 2: Convert to fraction form
397,857.60/548,727.84 = 281,365.20/x - Step 3: Cross multiply
397,857.60x = 548,727.84 × 281,365.20 - Step 4: Simplify right side
397,857.60x = 154,392,918,447.17 - Step 5: Solve for x
x = 154,392,918,447.17/397,857.60 - Step 6: Final answer
x = 388,060.75
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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.