Finding the Fourth Proportional to 371,898.78, 513,198.60 and 202,131.42
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Solution
The fourth proportional to 371,898.78, 513,198.60 and 202,131.42 is: 278,929.56
Step by Step Solution
- Step 1: Write the proportion equation
371,898.78 : 513,198.60 = 202,131.42 : x - Step 2: Convert to fraction form
371,898.78/513,198.60 = 202,131.42/x - Step 3: Cross multiply
371,898.78x = 513,198.60 × 202,131.42 - Step 4: Simplify right side
371,898.78x = 103,733,561,760.01 - Step 5: Solve for x
x = 103,733,561,760.01/371,898.78 - Step 6: Final answer
x = 278,929.56
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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.