Finding the Fourth Proportional to 208,123.22, 287,210.10 and 112,629.99
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Solution
The fourth proportional to 208,123.22, 287,210.10 and 112,629.99 is: 155,429.42
Step by Step Solution
- Step 1: Write the proportion equation
208,123.22 : 287,210.10 = 112,629.99 : x - Step 2: Convert to fraction form
208,123.22/287,210.10 = 112,629.99/x - Step 3: Cross multiply
208,123.22x = 287,210.10 × 112,629.99 - Step 4: Simplify right side
208,123.22x = 32,348,472,190.30 - Step 5: Solve for x
x = 32,348,472,190.30/208,123.22 - Step 6: Final answer
x = 155,429.42
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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.