Finding the Fourth Proportional to 216,115.29, 324,198.81 and 66,335.95
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Solution
The fourth proportional to 216,115.29, 324,198.81 and 66,335.95 is: 99,511.87
Step by Step Solution
- Step 1: Write the proportion equation
216,115.29 : 324,198.81 = 66,335.95 : x - Step 2: Convert to fraction form
216,115.29/324,198.81 = 66,335.95/x - Step 3: Cross multiply
216,115.29x = 324,198.81 × 66,335.95 - Step 4: Simplify right side
216,115.29x = 21,506,036,050.22 - Step 5: Solve for x
x = 21,506,036,050.22/216,115.29 - Step 6: Final answer
x = 99,511.87
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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.