Finding the Fourth Proportional to 388,104.49, 535,407.19 and 280,504.09
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Solution
The fourth proportional to 388,104.49, 535,407.19 and 280,504.09 is: 386,967.71
Step by Step Solution
- Step 1: Write the proportion equation
388,104.49 : 535,407.19 = 280,504.09 : x - Step 2: Convert to fraction form
388,104.49/535,407.19 = 280,504.09/x - Step 3: Cross multiply
388,104.49x = 535,407.19 × 280,504.09 - Step 4: Simplify right side
388,104.49x = 150,183,906,610.41 - Step 5: Solve for x
x = 150,183,906,610.41/388,104.49 - Step 6: Final answer
x = 386,967.71
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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.