Finding the Fourth Proportional to 207,903.10, 311,854.65 and 74,787.70
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Solution
The fourth proportional to 207,903.10, 311,854.65 and 74,787.70 is: 112,181.55
Step by Step Solution
- Step 1: Write the proportion equation
207,903.10 : 311,854.65 = 74,787.70 : x - Step 2: Convert to fraction form
207,903.10/311,854.65 = 74,787.70/x - Step 3: Cross multiply
207,903.10x = 311,854.65 × 74,787.70 - Step 4: Simplify right side
207,903.10x = 23,322,892,007.81 - Step 5: Solve for x
x = 23,322,892,007.81/207,903.10 - Step 6: Final answer
x = 112,181.55
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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.