Finding the Fourth Proportional to 201,974.10, 302,615.55 and 128,015.70
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Solution
The fourth proportional to 201,974.10, 302,615.55 and 128,015.70 is: 191,804.50
Step by Step Solution
- Step 1: Write the proportion equation
201,974.10 : 302,615.55 = 128,015.70 : x - Step 2: Convert to fraction form
201,974.10/302,615.55 = 128,015.70/x - Step 3: Cross multiply
201,974.10x = 302,615.55 × 128,015.70 - Step 4: Simplify right side
201,974.10x = 38,739,541,464.14 - Step 5: Solve for x
x = 38,739,541,464.14/201,974.10 - Step 6: Final answer
x = 191,804.50
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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.