Finding the Fourth Proportional to 261,386.73, 392,131.15 and 83,880.09
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Solution
The fourth proportional to 261,386.73, 392,131.15 and 83,880.09 is: 125,836.52
Step by Step Solution
- Step 1: Write the proportion equation
261,386.73 : 392,131.15 = 83,880.09 : x - Step 2: Convert to fraction form
261,386.73/392,131.15 = 83,880.09/x - Step 3: Cross multiply
261,386.73x = 392,131.15 × 83,880.09 - Step 4: Simplify right side
261,386.73x = 32,891,995,944.10 - Step 5: Solve for x
x = 32,891,995,944.10/261,386.73 - Step 6: Final answer
x = 125,836.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.