Finding the Fourth Proportional to 208,691.74, 287,992.56 and 113,197.06
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Solution
The fourth proportional to 208,691.74, 287,992.56 and 113,197.06 is: 156,210.84
Step by Step Solution
- Step 1: Write the proportion equation
208,691.74 : 287,992.56 = 113,197.06 : x - Step 2: Convert to fraction form
208,691.74/287,992.56 = 113,197.06/x - Step 3: Cross multiply
208,691.74x = 287,992.56 × 113,197.06 - Step 4: Simplify right side
208,691.74x = 32,599,911,093.87 - Step 5: Solve for x
x = 32,599,911,093.87/208,691.74 - Step 6: Final answer
x = 156,210.84
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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.