Finding the Fourth Proportional to 178,309.49, 267,201.77 and 78,378.17
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Solution
The fourth proportional to 178,309.49, 267,201.77 and 78,378.17 is: 117,451.88
Step by Step Solution
- Step 1: Write the proportion equation
178,309.49 : 267,201.77 = 78,378.17 : x - Step 2: Convert to fraction form
178,309.49/267,201.77 = 78,378.17/x - Step 3: Cross multiply
178,309.49x = 267,201.77 × 78,378.17 - Step 4: Simplify right side
178,309.49x = 20,942,784,025.46 - Step 5: Solve for x
x = 20,942,784,025.46/178,309.49 - Step 6: Final answer
x = 117,451.88
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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.