Finding the Fourth Proportional to 378,742.56, 568,113.12 and 220,860.30
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Solution
The fourth proportional to 378,742.56, 568,113.12 and 220,860.30 is: 331,290.03
Step by Step Solution
- Step 1: Write the proportion equation
378,742.56 : 568,113.12 = 220,860.30 : x - Step 2: Convert to fraction form
378,742.56/568,113.12 = 220,860.30/x - Step 3: Cross multiply
378,742.56x = 568,113.12 × 220,860.30 - Step 4: Simplify right side
378,742.56x = 125,473,634,117.14 - Step 5: Solve for x
x = 125,473,634,117.14/378,742.56 - Step 6: Final answer
x = 331,290.03
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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.