Finding the Fourth Proportional to 311,898.42, 430,424.28 and 190,995.57
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Solution
The fourth proportional to 311,898.42, 430,424.28 and 190,995.57 is: 263,576.62
Step by Step Solution
- Step 1: Write the proportion equation
311,898.42 : 430,424.28 = 190,995.57 : x - Step 2: Convert to fraction form
311,898.42/430,424.28 = 190,995.57/x - Step 3: Cross multiply
311,898.42x = 430,424.28 × 190,995.57 - Step 4: Simplify right side
311,898.42x = 82,209,130,700.44 - Step 5: Solve for x
x = 82,209,130,700.44/311,898.42 - Step 6: Final answer
x = 263,576.62
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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.