Finding the Fourth Proportional to 208,811.28, 288,161.68 and 113,318.80
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Solution
The fourth proportional to 208,811.28, 288,161.68 and 113,318.80 is: 156,381.09
Step by Step Solution
- Step 1: Write the proportion equation
208,811.28 : 288,161.68 = 113,318.80 : x - Step 2: Convert to fraction form
208,811.28/288,161.68 = 113,318.80/x - Step 3: Cross multiply
208,811.28x = 288,161.68 × 113,318.80 - Step 4: Simplify right side
208,811.28x = 32,654,135,783.58 - Step 5: Solve for x
x = 32,654,135,783.58/208,811.28 - Step 6: Final answer
x = 156,381.09
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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.