Finding the Fourth Proportional to 211,611.67, 317,416.41 and 74,936.18
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Solution
The fourth proportional to 211,611.67, 317,416.41 and 74,936.18 is: 112,403.89
Step by Step Solution
- Step 1: Write the proportion equation
211,611.67 : 317,416.41 = 74,936.18 : x - Step 2: Convert to fraction form
211,611.67/317,416.41 = 74,936.18/x - Step 3: Cross multiply
211,611.67x = 317,416.41 × 74,936.18 - Step 4: Simplify right side
211,611.67x = 23,785,974,028.25 - Step 5: Solve for x
x = 23,785,974,028.25/211,611.67 - Step 6: Final answer
x = 112,403.89
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1.5x scale
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.