Finding the Fourth Proportional to 311,909.36, 430,434.96 and 168,669.44
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Solution
The fourth proportional to 311,909.36, 430,434.96 and 168,669.44 is: 232,763.85
Step by Step Solution
- Step 1: Write the proportion equation
311,909.36 : 430,434.96 = 168,669.44 : x - Step 2: Convert to fraction form
311,909.36/430,434.96 = 168,669.44/x - Step 3: Cross multiply
311,909.36x = 430,434.96 × 168,669.44 - Step 4: Simplify right side
311,909.36x = 72,601,223,659.62 - Step 5: Solve for x
x = 72,601,223,659.62/311,909.36 - Step 6: Final answer
x = 232,763.85
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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.