Finding the Fourth Proportional to 327,122.10, 490,683.15 and 215,147.70
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Solution
The fourth proportional to 327,122.10, 490,683.15 and 215,147.70 is: 322,721.55
Step by Step Solution
- Step 1: Write the proportion equation
327,122.10 : 490,683.15 = 215,147.70 : x - Step 2: Convert to fraction form
327,122.10/490,683.15 = 215,147.70/x - Step 3: Cross multiply
327,122.10x = 490,683.15 × 215,147.70 - Step 4: Simplify right side
327,122.10x = 105,569,351,151.26 - Step 5: Solve for x
x = 105,569,351,151.26/327,122.10 - Step 6: Final answer
x = 322,721.55
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Similar ratio
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1.5x scale
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.