Finding the Fourth Proportional to 378,875.28, 568,387.84 and 138,991.44
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Solution
The fourth proportional to 378,875.28, 568,387.84 and 138,991.44 is: 208,514.64
Step by Step Solution
- Step 1: Write the proportion equation
378,875.28 : 568,387.84 = 138,991.44 : x - Step 2: Convert to fraction form
378,875.28/568,387.84 = 138,991.44/x - Step 3: Cross multiply
378,875.28x = 568,387.84 × 138,991.44 - Step 4: Simplify right side
378,875.28x = 79,001,044,360.09 - Step 5: Solve for x
x = 79,001,044,360.09/378,875.28 - Step 6: Final answer
x = 208,514.64
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.