Finding the Fourth Proportional to 312,126.11, 430,575.34 and 189,585.88
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Solution
The fourth proportional to 312,126.11, 430,575.34 and 189,585.88 is: 261,532.12
Step by Step Solution
- Step 1: Write the proportion equation
312,126.11 : 430,575.34 = 189,585.88 : x - Step 2: Convert to fraction form
312,126.11/430,575.34 = 189,585.88/x - Step 3: Cross multiply
312,126.11x = 430,575.34 × 189,585.88 - Step 4: Simplify right side
312,126.11x = 81,631,004,740.20 - Step 5: Solve for x
x = 81,631,004,740.20/312,126.11 - Step 6: Final answer
x = 261,532.12
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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.