Finding the Fourth Proportional to 280,942.08, 421,349.91 and 81,217.98
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Solution
The fourth proportional to 280,942.08, 421,349.91 and 81,217.98 is: 121,808.70
Step by Step Solution
- Step 1: Write the proportion equation
280,942.08 : 421,349.91 = 81,217.98 : x - Step 2: Convert to fraction form
280,942.08/421,349.91 = 81,217.98/x - Step 3: Cross multiply
280,942.08x = 421,349.91 × 81,217.98 - Step 4: Simplify right side
280,942.08x = 34,221,188,563.38 - Step 5: Solve for x
x = 34,221,188,563.38/280,942.08 - Step 6: Final answer
x = 121,808.70
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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.