Finding the Fourth Proportional to 211,957.21, 317,935.81 and 99,554.97
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Solution
The fourth proportional to 211,957.21, 317,935.81 and 99,554.97 is: 149,332.46
Step by Step Solution
- Step 1: Write the proportion equation
211,957.21 : 317,935.81 = 99,554.97 : x - Step 2: Convert to fraction form
211,957.21/317,935.81 = 99,554.97/x - Step 3: Cross multiply
211,957.21x = 317,935.81 × 99,554.97 - Step 4: Simplify right side
211,957.21x = 31,652,091,063.18 - Step 5: Solve for x
x = 31,652,091,063.18/211,957.21 - Step 6: Final answer
x = 149,332.46
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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.