Finding the Fourth Proportional to 198,716.70, 297,637.65 and 139,230.30
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Solution
The fourth proportional to 198,716.70, 297,637.65 and 139,230.30 is: 208,538.99
Step by Step Solution
- Step 1: Write the proportion equation
198,716.70 : 297,637.65 = 139,230.30 : x - Step 2: Convert to fraction form
198,716.70/297,637.65 = 139,230.30/x - Step 3: Cross multiply
198,716.70x = 297,637.65 × 139,230.30 - Step 4: Simplify right side
198,716.70x = 41,440,179,300.80 - Step 5: Solve for x
x = 41,440,179,300.80/198,716.70 - Step 6: Final answer
x = 208,538.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.