Finding the Fourth Proportional to 310,125.44, 428,039.76 and 189,240.80
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Solution
The fourth proportional to 310,125.44, 428,039.76 and 189,240.80 is: 261,192.98
Step by Step Solution
- Step 1: Write the proportion equation
310,125.44 : 428,039.76 = 189,240.80 : x - Step 2: Convert to fraction form
310,125.44/428,039.76 = 189,240.80/x - Step 3: Cross multiply
310,125.44x = 428,039.76 × 189,240.80 - Step 4: Simplify right side
310,125.44x = 81,002,586,614.21 - Step 5: Solve for x
x = 81,002,586,614.21/310,125.44 - Step 6: Final answer
x = 261,192.98
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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.