Finding the Fourth Proportional to 311,905.49, 430,429.88 and 168,665.49
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Solution
The fourth proportional to 311,905.49, 430,429.88 and 168,665.49 is: 232,758.55
Step by Step Solution
- Step 1: Write the proportion equation
311,905.49 : 430,429.88 = 168,665.49 : x - Step 2: Convert to fraction form
311,905.49/430,429.88 = 168,665.49/x - Step 3: Cross multiply
311,905.49x = 430,429.88 × 168,665.49 - Step 4: Simplify right side
311,905.49x = 72,598,667,042.50 - Step 5: Solve for x
x = 72,598,667,042.50/311,905.49 - Step 6: Final answer
x = 232,758.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.