Finding the Fourth Proportional to 258,784,512,231.32, 388,218,479,937.30 and 79,710,415,745.99
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Solution
The fourth proportional to 258,784,512,231.32, 388,218,479,937.30 and 79,710,415,745.99 is: 119,578,471,560.23
Step by Step Solution
- Step 1: Write the proportion equation
258,784,512,231.32 : 388,218,479,937.30 = 79,710,415,745.99 : x - Step 2: Convert to fraction form
258,784,512,231.32/388,218,479,937.30 = 79,710,415,745.99/x - Step 3: Cross multiply
258,784,512,231.32x = 388,218,479,937.30 × 79,710,415,745.99 - Step 4: Simplify right side
258,784,512,231.32x = 30,945,056,436,080,015,835,136 - Step 5: Solve for x
x = 30,945,056,436,080,015,835,136/258,784,512,231.32 - Step 6: Final answer
x = 119,578,471,560.23
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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.