Finding the Fourth Proportional to 419,136.97, 578,422.07 and 228,163.09
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Solution
The fourth proportional to 419,136.97, 578,422.07 and 228,163.09 is: 314,872.17
Step by Step Solution
- Step 1: Write the proportion equation
419,136.97 : 578,422.07 = 228,163.09 : x - Step 2: Convert to fraction form
419,136.97/578,422.07 = 228,163.09/x - Step 3: Cross multiply
419,136.97x = 578,422.07 × 228,163.09 - Step 4: Simplify right side
419,136.97x = 131,974,566,815.40 - Step 5: Solve for x
x = 131,974,566,815.40/419,136.97 - Step 6: Final answer
x = 314,872.17
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.