Finding the Fourth Proportional to 208,692.99, 287,994.29 and 113,198.31
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Solution
The fourth proportional to 208,692.99, 287,994.29 and 113,198.31 is: 156,212.56
Step by Step Solution
- Step 1: Write the proportion equation
208,692.99 : 287,994.29 = 113,198.31 : x - Step 2: Convert to fraction form
208,692.99/287,994.29 = 113,198.31/x - Step 3: Cross multiply
208,692.99x = 287,994.29 × 113,198.31 - Step 4: Simplify right side
208,692.99x = 32,600,466,351.66 - Step 5: Solve for x
x = 32,600,466,351.66/208,692.99 - Step 6: Final answer
x = 156,212.56
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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.