Finding the Fourth Proportional to 258,896.88, 388,438.47 and 90,441.99
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Solution
The fourth proportional to 258,896.88, 388,438.47 and 90,441.99 is: 135,695.53
Step by Step Solution
- Step 1: Write the proportion equation
258,896.88 : 388,438.47 = 90,441.99 : x - Step 2: Convert to fraction form
258,896.88/388,438.47 = 90,441.99/x - Step 3: Cross multiply
258,896.88x = 388,438.47 × 90,441.99 - Step 4: Simplify right side
258,896.88x = 35,131,148,219.36 - Step 5: Solve for x
x = 35,131,148,219.36/258,896.88 - Step 6: Final answer
x = 135,695.53
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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.