Finding the Fourth Proportional to 218,930.70, 328,243.32 and 112,107.09
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Solution
The fourth proportional to 218,930.70, 328,243.32 and 112,107.09 is: 168,082.43
Step by Step Solution
- Step 1: Write the proportion equation
218,930.70 : 328,243.32 = 112,107.09 : x - Step 2: Convert to fraction form
218,930.70/328,243.32 = 112,107.09/x - Step 3: Cross multiply
218,930.70x = 328,243.32 × 112,107.09 - Step 4: Simplify right side
218,930.70x = 36,798,403,417.14 - Step 5: Solve for x
x = 36,798,403,417.14/218,930.70 - Step 6: Final answer
x = 168,082.43
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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.