Finding the Fourth Proportional to 388,163.76, 535,664.96 and 218,398.08
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Solution
The fourth proportional to 388,163.76, 535,664.96 and 218,398.08 is: 301,388.77
Step by Step Solution
- Step 1: Write the proportion equation
388,163.76 : 535,664.96 = 218,398.08 : x - Step 2: Convert to fraction form
388,163.76/535,664.96 = 218,398.08/x - Step 3: Cross multiply
388,163.76x = 535,664.96 × 218,398.08 - Step 4: Simplify right side
388,163.76x = 116,988,198,787.28 - Step 5: Solve for x
x = 116,988,198,787.28/388,163.76 - Step 6: Final answer
x = 301,388.77
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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.