Finding the Fourth Proportional to 356,639.30, 534,664.11 and 278,101.70
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Solution
The fourth proportional to 356,639.30, 534,664.11 and 278,101.70 is: 416,922.64
Step by Step Solution
- Step 1: Write the proportion equation
356,639.30 : 534,664.11 = 278,101.70 : x - Step 2: Convert to fraction form
356,639.30/534,664.11 = 278,101.70/x - Step 3: Cross multiply
356,639.30x = 534,664.11 × 278,101.70 - Step 4: Simplify right side
356,639.30x = 148,690,997,919.99 - Step 5: Solve for x
x = 148,690,997,919.99/356,639.30 - Step 6: Final answer
x = 416,922.64
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.