Finding the Fourth Proportional to 208,811.81, 288,160.52 and 113,318.53
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Solution
The fourth proportional to 208,811.81, 288,160.52 and 113,318.53 is: 156,379.68
Step by Step Solution
- Step 1: Write the proportion equation
208,811.81 : 288,160.52 = 113,318.53 : x - Step 2: Convert to fraction form
208,811.81/288,160.52 = 113,318.53/x - Step 3: Cross multiply
208,811.81x = 288,160.52 × 113,318.53 - Step 4: Simplify right side
208,811.81x = 32,653,925,243.44 - Step 5: Solve for x
x = 32,653,925,243.44/208,811.81 - Step 6: Final answer
x = 156,379.68
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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.