Finding the Fourth Proportional to 221,329.94, 331,913.50 and 79,136.80
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Solution
The fourth proportional to 221,329.94, 331,913.50 and 79,136.80 is: 118,676.09
Step by Step Solution
- Step 1: Write the proportion equation
221,329.94 : 331,913.50 = 79,136.80 : x - Step 2: Convert to fraction form
221,329.94/331,913.50 = 79,136.80/x - Step 3: Cross multiply
221,329.94x = 331,913.50 × 79,136.80 - Step 4: Simplify right side
221,329.94x = 26,266,571,239.17 - Step 5: Solve for x
x = 26,266,571,239.17/221,329.94 - Step 6: Final answer
x = 118,676.09
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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.