Finding the Fourth Proportional to 258,062,130.40, 387,093,195.60 and 194,361,138.40
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Solution
The fourth proportional to 258,062,130.40, 387,093,195.60 and 194,361,138.40 is: 291,541,707.60
Step by Step Solution
- Step 1: Write the proportion equation
258,062,130.40 : 387,093,195.60 = 194,361,138.40 : x - Step 2: Convert to fraction form
258,062,130.40/387,093,195.60 = 194,361,138.40/x - Step 3: Cross multiply
258,062,130.40x = 387,093,195.60 × 194,361,138.40 - Step 4: Simplify right side
258,062,130.40x = 75,235,874,163,709,872 - Step 5: Solve for x
x = 75,235,874,163,709,872/258,062,130.40 - Step 6: Final answer
x = 291,541,707.60
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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.