Finding the Fourth Proportional to 212,136.26, 292,745.66 and 157,930.79
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Solution
The fourth proportional to 212,136.26, 292,745.66 and 157,930.79 is: 217,942.71
Step by Step Solution
- Step 1: Write the proportion equation
212,136.26 : 292,745.66 = 157,930.79 : x - Step 2: Convert to fraction form
212,136.26/292,745.66 = 157,930.79/x - Step 3: Cross multiply
212,136.26x = 292,745.66 × 157,930.79 - Step 4: Simplify right side
212,136.26x = 46,233,551,099.49 - Step 5: Solve for x
x = 46,233,551,099.49/212,136.26 - Step 6: Final answer
x = 217,942.71
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1.5x scale
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.