Finding the Fourth Proportional to 217,115.80, 325,731.30 and 76,859.80
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Solution
The fourth proportional to 217,115.80, 325,731.30 and 76,859.80 is: 115,310.09
Step by Step Solution
- Step 1: Write the proportion equation
217,115.80 : 325,731.30 = 76,859.80 : x - Step 2: Convert to fraction form
217,115.80/325,731.30 = 76,859.80/x - Step 3: Cross multiply
217,115.80x = 325,731.30 × 76,859.80 - Step 4: Simplify right side
217,115.80x = 25,035,642,571.74 - Step 5: Solve for x
x = 25,035,642,571.74/217,115.80 - Step 6: Final answer
x = 115,310.09
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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.