Finding the Fourth Proportional to 311,960.12, 430,505.21 and 168,719.99
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Solution
The fourth proportional to 311,960.12, 430,505.21 and 168,719.99 is: 232,833.72
Step by Step Solution
- Step 1: Write the proportion equation
311,960.12 : 430,505.21 = 168,719.99 : x - Step 2: Convert to fraction form
311,960.12/430,505.21 = 168,719.99/x - Step 3: Cross multiply
311,960.12x = 430,505.21 × 168,719.99 - Step 4: Simplify right side
311,960.12x = 72,634,832,995.42 - Step 5: Solve for x
x = 72,634,832,995.42/311,960.12 - Step 6: Final answer
x = 232,833.72
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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.