Finding the Fourth Proportional to 289,163.14, 399,045.09 and 161,838.73
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Solution
The fourth proportional to 289,163.14, 399,045.09 and 161,838.73 is: 223,337.42
Step by Step Solution
- Step 1: Write the proportion equation
289,163.14 : 399,045.09 = 161,838.73 : x - Step 2: Convert to fraction form
289,163.14/399,045.09 = 161,838.73/x - Step 3: Cross multiply
289,163.14x = 399,045.09 × 161,838.73 - Step 4: Simplify right side
289,163.14x = 64,580,950,578.34 - Step 5: Solve for x
x = 64,580,950,578.34/289,163.14 - Step 6: Final answer
x = 223,337.42
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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.