Finding the Fourth Proportional to 200,231.68, 276,209.04 and 128,622.28
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Solution
The fourth proportional to 200,231.68, 276,209.04 and 128,622.28 is: 177,427.65
Step by Step Solution
- Step 1: Write the proportion equation
200,231.68 : 276,209.04 = 128,622.28 : x - Step 2: Convert to fraction form
200,231.68/276,209.04 = 128,622.28/x - Step 3: Cross multiply
200,231.68x = 276,209.04 × 128,622.28 - Step 4: Simplify right side
200,231.68x = 35,526,636,481.41 - Step 5: Solve for x
x = 35,526,636,481.41/200,231.68 - Step 6: Final answer
x = 177,427.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.