Finding the Fourth Proportional to 280,692.99, 420,988.68 and 80,964.27
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Solution
The fourth proportional to 280,692.99, 420,988.68 and 80,964.27 is: 121,431.75
Step by Step Solution
- Step 1: Write the proportion equation
280,692.99 : 420,988.68 = 80,964.27 : x - Step 2: Convert to fraction form
280,692.99/420,988.68 = 80,964.27/x - Step 3: Cross multiply
280,692.99x = 420,988.68 × 80,964.27 - Step 4: Simplify right side
280,692.99x = 34,085,041,154.46 - Step 5: Solve for x
x = 34,085,041,154.46/280,692.99 - Step 6: Final answer
x = 121,431.75
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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.