Finding the Fourth Proportional to 280,702.99, 421,003.68 and 80,974.27
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Solution
The fourth proportional to 280,702.99, 421,003.68 and 80,974.27 is: 121,446.75
Step by Step Solution
- Step 1: Write the proportion equation
280,702.99 : 421,003.68 = 80,974.27 : x - Step 2: Convert to fraction form
280,702.99/421,003.68 = 80,974.27/x - Step 3: Cross multiply
280,702.99x = 421,003.68 × 80,974.27 - Step 4: Simplify right side
280,702.99x = 34,090,465,655.31 - Step 5: Solve for x
x = 34,090,465,655.31/280,702.99 - Step 6: Final answer
x = 121,446.75
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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.