Finding the Fourth Proportional to 258,732.26, 388,114.80 and 81,246.26
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Solution
The fourth proportional to 258,732.26, 388,114.80 and 81,246.26 is: 121,874.54
Step by Step Solution
- Step 1: Write the proportion equation
258,732.26 : 388,114.80 = 81,246.26 : x - Step 2: Convert to fraction form
258,732.26/388,114.80 = 81,246.26/x - Step 3: Cross multiply
258,732.26x = 388,114.80 × 81,246.26 - Step 4: Simplify right side
258,732.26x = 31,532,875,950.65 - Step 5: Solve for x
x = 31,532,875,950.65/258,732.26 - Step 6: Final answer
x = 121,874.54
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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.