Finding the Fourth Proportional to 355,879.09, 491,098.51 and 212,718.07
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Solution
The fourth proportional to 355,879.09, 491,098.51 and 212,718.07 is: 293,542.19
Step by Step Solution
- Step 1: Write the proportion equation
355,879.09 : 491,098.51 = 212,718.07 : x - Step 2: Convert to fraction form
355,879.09/491,098.51 = 212,718.07/x - Step 3: Cross multiply
355,879.09x = 491,098.51 × 212,718.07 - Step 4: Simplify right side
355,879.09x = 104,465,527,227.08 - Step 5: Solve for x
x = 104,465,527,227.08/355,879.09 - Step 6: Final answer
x = 293,542.19
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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.