Finding the Fourth Proportional to 280,528.13, 421,415.01 and 173,990.84
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Solution
The fourth proportional to 280,528.13, 421,415.01 and 173,990.84 is: 261,372.54
Step by Step Solution
- Step 1: Write the proportion equation
280,528.13 : 421,415.01 = 173,990.84 : x - Step 2: Convert to fraction form
280,528.13/421,415.01 = 173,990.84/x - Step 3: Cross multiply
280,528.13x = 421,415.01 × 173,990.84 - Step 4: Simplify right side
280,528.13x = 73,322,349,471.43 - Step 5: Solve for x
x = 73,322,349,471.43/280,528.13 - Step 6: Final answer
x = 261,372.54
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1.5x scale
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.