Finding the Fourth Proportional to 289,578.67, 433,989.70 and 161,489.84
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Solution
The fourth proportional to 289,578.67, 433,989.70 and 161,489.84 is: 242,023.79
Step by Step Solution
- Step 1: Write the proportion equation
289,578.67 : 433,989.70 = 161,489.84 : x - Step 2: Convert to fraction form
289,578.67/433,989.70 = 161,489.84/x - Step 3: Cross multiply
289,578.67x = 433,989.70 × 161,489.84 - Step 4: Simplify right side
289,578.67x = 70,084,927,214.65 - Step 5: Solve for x
x = 70,084,927,214.65/289,578.67 - Step 6: Final answer
x = 242,023.79
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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.