Finding the Fourth Proportional to 194,419,438.40, 291,237,247.20 and 121,412,129.60
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Solution
The fourth proportional to 194,419,438.40, 291,237,247.20 and 121,412,129.60 is: 181,873,452.02
Step by Step Solution
- Step 1: Write the proportion equation
194,419,438.40 : 291,237,247.20 = 121,412,129.60 : x - Step 2: Convert to fraction form
194,419,438.40/291,237,247.20 = 121,412,129.60/x - Step 3: Cross multiply
194,419,438.40x = 291,237,247.20 × 121,412,129.60 - Step 4: Simplify right side
194,419,438.40x = 35,359,734,401,393,632 - Step 5: Solve for x
x = 35,359,734,401,393,632/194,419,438.40 - Step 6: Final answer
x = 181,873,452.02
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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.