Finding the Fourth Proportional to 211,409.94, 317,071.86 and 78,258.55
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Solution
The fourth proportional to 211,409.94, 317,071.86 and 78,258.55 is: 117,371.88
Step by Step Solution
- Step 1: Write the proportion equation
211,409.94 : 317,071.86 = 78,258.55 : x - Step 2: Convert to fraction form
211,409.94/317,071.86 = 78,258.55/x - Step 3: Cross multiply
211,409.94x = 317,071.86 × 78,258.55 - Step 4: Simplify right side
211,409.94x = 24,813,582,846.10 - Step 5: Solve for x
x = 24,813,582,846.10/211,409.94 - Step 6: Final answer
x = 117,371.88
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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.