Finding the Fourth Proportional to 371,857.21, 513,148.49 and 202,087.69
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Solution
The fourth proportional to 371,857.21, 513,148.49 and 202,087.69 is: 278,873.15
Step by Step Solution
- Step 1: Write the proportion equation
371,857.21 : 513,148.49 = 202,087.69 : x - Step 2: Convert to fraction form
371,857.21/513,148.49 = 202,087.69/x - Step 3: Cross multiply
371,857.21x = 513,148.49 × 202,087.69 - Step 4: Simplify right side
371,857.21x = 103,700,992,971.09 - Step 5: Solve for x
x = 103,700,992,971.09/371,857.21 - Step 6: Final answer
x = 278,873.15
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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.