Finding the Fourth Proportional to 228,939.40, 343,409.10 and 154,289.80
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Solution
The fourth proportional to 228,939.40, 343,409.10 and 154,289.80 is: 231,434.70
Step by Step Solution
- Step 1: Write the proportion equation
228,939.40 : 343,409.10 = 154,289.80 : x - Step 2: Convert to fraction form
228,939.40/343,409.10 = 154,289.80/x - Step 3: Cross multiply
228,939.40x = 343,409.10 × 154,289.80 - Step 4: Simplify right side
228,939.40x = 52,984,521,357.18 - Step 5: Solve for x
x = 52,984,521,357.18/228,939.40 - Step 6: Final answer
x = 231,434.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.