Finding the Fourth Proportional to 201,742.20, 302,642.10 and 68,628.60
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Solution
The fourth proportional to 201,742.20, 302,642.10 and 68,628.60 is: 102,952.70
Step by Step Solution
- Step 1: Write the proportion equation
201,742.20 : 302,642.10 = 68,628.60 : x - Step 2: Convert to fraction form
201,742.20/302,642.10 = 68,628.60/x - Step 3: Cross multiply
201,742.20x = 302,642.10 × 68,628.60 - Step 4: Simplify right side
201,742.20x = 20,769,903,624.06 - Step 5: Solve for x
x = 20,769,903,624.06/201,742.20 - Step 6: Final answer
x = 102,952.70
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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.