Finding the Fourth Proportional to 386,198.08, 532,974.40 and 216,486.72
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Solution
The fourth proportional to 386,198.08, 532,974.40 and 216,486.72 is: 298,763.47
Step by Step Solution
- Step 1: Write the proportion equation
386,198.08 : 532,974.40 = 216,486.72 : x - Step 2: Convert to fraction form
386,198.08/532,974.40 = 216,486.72/x - Step 3: Cross multiply
386,198.08x = 532,974.40 × 216,486.72 - Step 4: Simplify right side
386,198.08x = 115,381,879,699.97 - Step 5: Solve for x
x = 115,381,879,699.97/386,198.08 - Step 6: Final answer
x = 298,763.47
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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.