Finding the Fourth Proportional to 257,620.40, 385,912.20 and 173,639.60
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Solution
The fourth proportional to 257,620.40, 385,912.20 and 173,639.60 is: 260,109.99
Step by Step Solution
- Step 1: Write the proportion equation
257,620.40 : 385,912.20 = 173,639.60 : x - Step 2: Convert to fraction form
257,620.40/385,912.20 = 173,639.60/x - Step 3: Cross multiply
257,620.40x = 385,912.20 × 173,639.60 - Step 4: Simplify right side
257,620.40x = 67,009,640,043.12 - Step 5: Solve for x
x = 67,009,640,043.12/257,620.40 - Step 6: Final answer
x = 260,109.99
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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.