Finding the Fourth Proportional to 208,202.18, 287,318.95 and 112,708.80
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Solution
The fourth proportional to 208,202.18, 287,318.95 and 112,708.80 is: 155,538.11
Step by Step Solution
- Step 1: Write the proportion equation
208,202.18 : 287,318.95 = 112,708.80 : x - Step 2: Convert to fraction form
208,202.18/287,318.95 = 112,708.80/x - Step 3: Cross multiply
208,202.18x = 287,318.95 × 112,708.80 - Step 4: Simplify right side
208,202.18x = 32,383,373,789.99 - Step 5: Solve for x
x = 32,383,373,789.99/208,202.18 - Step 6: Final answer
x = 155,538.11
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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.