Finding the Fourth Proportional to 208,812.28, 288,163.06 and 113,319.80
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Solution
The fourth proportional to 208,812.28, 288,163.06 and 113,319.80 is: 156,382.47
Step by Step Solution
- Step 1: Write the proportion equation
208,812.28 : 288,163.06 = 113,319.80 : x - Step 2: Convert to fraction form
208,812.28/288,163.06 = 113,319.80/x - Step 3: Cross multiply
208,812.28x = 288,163.06 × 113,319.80 - Step 4: Simplify right side
208,812.28x = 32,654,580,326.59 - Step 5: Solve for x
x = 32,654,580,326.59/208,812.28 - Step 6: Final answer
x = 156,382.47
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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.