Finding the Fourth Proportional to 280,443.41, 420,753.63 and 213,297.09
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Solution
The fourth proportional to 280,443.41, 420,753.63 and 213,297.09 is: 320,012.96
Step by Step Solution
- Step 1: Write the proportion equation
280,443.41 : 420,753.63 = 213,297.09 : x - Step 2: Convert to fraction form
280,443.41/420,753.63 = 213,297.09/x - Step 3: Cross multiply
280,443.41x = 420,753.63 × 213,297.09 - Step 4: Simplify right side
280,443.41x = 89,745,524,885.94 - Step 5: Solve for x
x = 89,745,524,885.94/280,443.41 - Step 6: Final answer
x = 320,012.96
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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.