Finding the Fourth Proportional to 398,486.40, 598,069.80 and 161,998.80
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Solution
The fourth proportional to 398,486.40, 598,069.80 and 161,998.80 is: 243,136.50
Step by Step Solution
- Step 1: Write the proportion equation
398,486.40 : 598,069.80 = 161,998.80 : x - Step 2: Convert to fraction form
398,486.40/598,069.80 = 161,998.80/x - Step 3: Cross multiply
398,486.40x = 598,069.80 × 161,998.80 - Step 4: Simplify right side
398,486.40x = 96,886,589,916.24 - Step 5: Solve for x
x = 96,886,589,916.24/398,486.40 - Step 6: Final answer
x = 243,136.50
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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.