Finding the Fourth Proportional to 355,882.09, 491,102.64 and 212,721.07
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Solution
The fourth proportional to 355,882.09, 491,102.64 and 212,721.07 is: 293,546.32
Step by Step Solution
- Step 1: Write the proportion equation
355,882.09 : 491,102.64 = 212,721.07 : x - Step 2: Convert to fraction form
355,882.09/491,102.64 = 212,721.07/x - Step 3: Cross multiply
355,882.09x = 491,102.64 × 212,721.07 - Step 4: Simplify right side
355,882.09x = 104,467,879,060.63 - Step 5: Solve for x
x = 104,467,879,060.63/355,882.09 - Step 6: Final answer
x = 293,546.32
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1.5x scale
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.