Finding the Fourth Proportional to 211,611.29, 317,415.85 and 74,935.81
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Solution
The fourth proportional to 211,611.29, 317,415.85 and 74,935.81 is: 112,403.32
Step by Step Solution
- Step 1: Write the proportion equation
211,611.29 : 317,415.85 = 74,935.81 : x - Step 2: Convert to fraction form
211,611.29/317,415.85 = 74,935.81/x - Step 3: Cross multiply
211,611.29x = 317,415.85 × 74,935.81 - Step 4: Simplify right side
211,611.29x = 23,785,812,845.71 - Step 5: Solve for x
x = 23,785,812,845.71/211,611.29 - Step 6: Final answer
x = 112,403.32
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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.