Finding the Fourth Proportional to 246,245.12, 339,821.28 and 138,815.20
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Solution
The fourth proportional to 246,245.12, 339,821.28 and 138,815.20 is: 191,566.68
Step by Step Solution
- Step 1: Write the proportion equation
246,245.12 : 339,821.28 = 138,815.20 : x - Step 2: Convert to fraction form
246,245.12/339,821.28 = 138,815.20/x - Step 3: Cross multiply
246,245.12x = 339,821.28 × 138,815.20 - Step 4: Simplify right side
246,245.12x = 47,172,358,947.46 - Step 5: Solve for x
x = 47,172,358,947.46/246,245.12 - Step 6: Final answer
x = 191,566.68
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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.