Finding the Fourth Proportional to 378,163.88, 521,877.09 and 208,408.94
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Solution
The fourth proportional to 378,163.88, 521,877.09 and 208,408.94 is: 287,610.36
Step by Step Solution
- Step 1: Write the proportion equation
378,163.88 : 521,877.09 = 208,408.94 : x - Step 2: Convert to fraction form
378,163.88/521,877.09 = 208,408.94/x - Step 3: Cross multiply
378,163.88x = 521,877.09 × 208,408.94 - Step 4: Simplify right side
378,163.88x = 108,763,851,137.19 - Step 5: Solve for x
x = 108,763,851,137.19/378,163.88 - Step 6: Final answer
x = 287,610.36
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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.