Finding the Fourth Proportional to 311,958.05, 430,502.10 and 168,718.09
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Solution
The fourth proportional to 311,958.05, 430,502.10 and 168,718.09 is: 232,830.96
Step by Step Solution
- Step 1: Write the proportion equation
311,958.05 : 430,502.10 = 168,718.09 : x - Step 2: Convert to fraction form
311,958.05/430,502.10 = 168,718.09/x - Step 3: Cross multiply
311,958.05x = 430,502.10 × 168,718.09 - Step 4: Simplify right side
311,958.05x = 72,633,492,052.99 - Step 5: Solve for x
x = 72,633,492,052.99/311,958.05 - Step 6: Final answer
x = 232,830.96
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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.