Finding the Fourth Proportional to 278,967.57, 384,974.94 and 151,644.09
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Solution
The fourth proportional to 278,967.57, 384,974.94 and 151,644.09 is: 209,268.68
Step by Step Solution
- Step 1: Write the proportion equation
278,967.57 : 384,974.94 = 151,644.09 : x - Step 2: Convert to fraction form
278,967.57/384,974.94 = 151,644.09/x - Step 3: Cross multiply
278,967.57x = 384,974.94 × 151,644.09 - Step 4: Simplify right side
278,967.57x = 58,379,174,449.10 - Step 5: Solve for x
x = 58,379,174,449.10/278,967.57 - Step 6: Final answer
x = 209,268.68
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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.