Finding the Fourth Proportional to 212,380.21, 318,625.49 and 79,261.48
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Solution
The fourth proportional to 212,380.21, 318,625.49 and 79,261.48 is: 118,912.81
Step by Step Solution
- Step 1: Write the proportion equation
212,380.21 : 318,625.49 = 79,261.48 : x - Step 2: Convert to fraction form
212,380.21/318,625.49 = 79,261.48/x - Step 3: Cross multiply
212,380.21x = 318,625.49 × 79,261.48 - Step 4: Simplify right side
212,380.21x = 25,254,727,903.13 - Step 5: Solve for x
x = 25,254,727,903.13/212,380.21 - Step 6: Final answer
x = 118,912.81
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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.