Finding the Fourth Proportional to 208,879.16, 288,252.99 and 113,385.87
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Solution
The fourth proportional to 208,879.16, 288,252.99 and 113,385.87 is: 156,472.37
Step by Step Solution
- Step 1: Write the proportion equation
208,879.16 : 288,252.99 = 113,385.87 : x - Step 2: Convert to fraction form
208,879.16/288,252.99 = 113,385.87/x - Step 3: Cross multiply
208,879.16x = 288,252.99 × 113,385.87 - Step 4: Simplify right side
208,879.16x = 32,683,816,051.25 - Step 5: Solve for x
x = 32,683,816,051.25/208,879.16 - Step 6: Final answer
x = 156,472.37
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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.