Finding the Fourth Proportional to 216,368.76, 324,583.86 and 66,621.48
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Solution
The fourth proportional to 216,368.76, 324,583.86 and 66,621.48 is: 99,941.68
Step by Step Solution
- Step 1: Write the proportion equation
216,368.76 : 324,583.86 = 66,621.48 : x - Step 2: Convert to fraction form
216,368.76/324,583.86 = 66,621.48/x - Step 3: Cross multiply
216,368.76x = 324,583.86 × 66,621.48 - Step 4: Simplify right side
216,368.76x = 21,624,257,137.31 - Step 5: Solve for x
x = 21,624,257,137.31/216,368.76 - Step 6: Final answer
x = 99,941.68
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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.