Finding the Fourth Proportional to 278,439.36, 384,242.40 and 151,111.68
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Solution
The fourth proportional to 278,439.36, 384,242.40 and 151,111.68 is: 208,531.99
Step by Step Solution
- Step 1: Write the proportion equation
278,439.36 : 384,242.40 = 151,111.68 : x - Step 2: Convert to fraction form
278,439.36/384,242.40 = 151,111.68/x - Step 3: Cross multiply
278,439.36x = 384,242.40 × 151,111.68 - Step 4: Simplify right side
278,439.36x = 58,063,514,591.23 - Step 5: Solve for x
x = 58,063,514,591.23/278,439.36 - Step 6: Final answer
x = 208,531.99
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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.