Finding the Fourth Proportional to 207,922.60, 311,883.90 and 74,807.20
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Solution
The fourth proportional to 207,922.60, 311,883.90 and 74,807.20 is: 112,210.80
Step by Step Solution
- Step 1: Write the proportion equation
207,922.60 : 311,883.90 = 74,807.20 : x - Step 2: Convert to fraction form
207,922.60/311,883.90 = 74,807.20/x - Step 3: Cross multiply
207,922.60x = 311,883.90 × 74,807.20 - Step 4: Simplify right side
207,922.60x = 23,331,161,284.08 - Step 5: Solve for x
x = 23,331,161,284.08/207,922.60 - Step 6: Final answer
x = 112,210.80
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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.