Finding the Fourth Proportional to 263,786.65, 395,735.34 and 86,279.80
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Solution
The fourth proportional to 263,786.65, 395,735.34 and 86,279.80 is: 129,437.81
Step by Step Solution
- Step 1: Write the proportion equation
263,786.65 : 395,735.34 = 86,279.80 : x - Step 2: Convert to fraction form
263,786.65/395,735.34 = 86,279.80/x - Step 3: Cross multiply
263,786.65x = 395,735.34 × 86,279.80 - Step 4: Simplify right side
263,786.65x = 34,143,965,988.13 - Step 5: Solve for x
x = 34,143,965,988.13/263,786.65 - Step 6: Final answer
x = 129,437.81
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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.