Finding the Fourth Proportional to 311,904.96, 430,428.99 and 168,665.10
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Solution
The fourth proportional to 311,904.96, 430,428.99 and 168,665.10 is: 232,757.92
Step by Step Solution
- Step 1: Write the proportion equation
311,904.96 : 430,428.99 = 168,665.10 : x - Step 2: Convert to fraction form
311,904.96/430,428.99 = 168,665.10/x - Step 3: Cross multiply
311,904.96x = 430,428.99 × 168,665.10 - Step 4: Simplify right side
311,904.96x = 72,598,348,641.25 - Step 5: Solve for x
x = 72,598,348,641.25/311,904.96 - Step 6: Final answer
x = 232,757.92
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1.5x scale
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.