Finding the Fourth Proportional to 279,431.46, 385,772.49 and 213,896.79
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Solution
The fourth proportional to 279,431.46, 385,772.49 and 213,896.79 is: 295,297.81
Step by Step Solution
- Step 1: Write the proportion equation
279,431.46 : 385,772.49 = 213,896.79 : x - Step 2: Convert to fraction form
279,431.46/385,772.49 = 213,896.79/x - Step 3: Cross multiply
279,431.46x = 385,772.49 × 213,896.79 - Step 4: Simplify right side
279,431.46x = 82,515,497,281.31 - Step 5: Solve for x
x = 82,515,497,281.31/279,431.46 - Step 6: Final answer
x = 295,297.81
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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.