Finding the Fourth Proportional to 306,122.38, 422,532.21 and 198,686.14
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Solution
The fourth proportional to 306,122.38, 422,532.21 and 198,686.14 is: 274,240.95
Step by Step Solution
- Step 1: Write the proportion equation
306,122.38 : 422,532.21 = 198,686.14 : x - Step 2: Convert to fraction form
306,122.38/422,532.21 = 198,686.14/x - Step 3: Cross multiply
306,122.38x = 422,532.21 × 198,686.14 - Step 4: Simplify right side
306,122.38x = 83,951,293,830.57 - Step 5: Solve for x
x = 83,951,293,830.57/306,122.38 - Step 6: Final answer
x = 274,240.95
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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.