Finding the Fourth Proportional to 272,572.21, 408,829.56 and 72,912.75
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Solution
The fourth proportional to 272,572.21, 408,829.56 and 72,912.75 is: 109,361.43
Step by Step Solution
- Step 1: Write the proportion equation
272,572.21 : 408,829.56 = 72,912.75 : x - Step 2: Convert to fraction form
272,572.21/408,829.56 = 72,912.75/x - Step 3: Cross multiply
272,572.21x = 408,829.56 × 72,912.75 - Step 4: Simplify right side
272,572.21x = 29,808,887,136.33 - Step 5: Solve for x
x = 29,808,887,136.33/272,572.21 - Step 6: Final answer
x = 109,361.43
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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.