Finding the Fourth Proportional to 216,623.21, 324,809.74 and 66,823.28
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Solution
The fourth proportional to 216,623.21, 324,809.74 and 66,823.28 is: 100,196.33
Step by Step Solution
- Step 1: Write the proportion equation
216,623.21 : 324,809.74 = 66,823.28 : x - Step 2: Convert to fraction form
216,623.21/324,809.74 = 66,823.28/x - Step 3: Cross multiply
216,623.21x = 324,809.74 × 66,823.28 - Step 4: Simplify right side
216,623.21x = 21,704,851,557.78 - Step 5: Solve for x
x = 21,704,851,557.78/216,623.21 - Step 6: Final answer
x = 100,196.33
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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.