Finding the Fourth Proportional to 397,683.40, 548,812.49 and 225,612.99
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Solution
The fourth proportional to 397,683.40, 548,812.49 and 225,612.99 is: 311,351.26
Step by Step Solution
- Step 1: Write the proportion equation
397,683.40 : 548,812.49 = 225,612.99 : x - Step 2: Convert to fraction form
397,683.40/548,812.49 = 225,612.99/x - Step 3: Cross multiply
397,683.40x = 548,812.49 × 225,612.99 - Step 4: Simplify right side
397,683.40x = 123,819,226,818.25 - Step 5: Solve for x
x = 123,819,226,818.25/397,683.40 - Step 6: Final answer
x = 311,351.26
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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.