Finding the Fourth Proportional to 208,283.28, 287,431.08 and 112,790.08
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Solution
The fourth proportional to 208,283.28, 287,431.08 and 112,790.08 is: 155,650.39
Step by Step Solution
- Step 1: Write the proportion equation
208,283.28 : 287,431.08 = 112,790.08 : x - Step 2: Convert to fraction form
208,283.28/287,431.08 = 112,790.08/x - Step 3: Cross multiply
208,283.28x = 287,431.08 × 112,790.08 - Step 4: Simplify right side
208,283.28x = 32,419,374,507.69 - Step 5: Solve for x
x = 32,419,374,507.69/208,283.28 - Step 6: Final answer
x = 155,650.39
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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.