Finding the Fourth Proportional to 208,871.45, 288,242.94 and 113,378.12
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Solution
The fourth proportional to 208,871.45, 288,242.94 and 113,378.12 is: 156,461.99
Step by Step Solution
- Step 1: Write the proportion equation
208,871.45 : 288,242.94 = 113,378.12 : x - Step 2: Convert to fraction form
208,871.45/288,242.94 = 113,378.12/x - Step 3: Cross multiply
208,871.45x = 288,242.94 × 113,378.12 - Step 4: Simplify right side
208,871.45x = 32,680,442,640.47 - Step 5: Solve for x
x = 32,680,442,640.47/208,871.45 - Step 6: Final answer
x = 156,461.99
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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.