Finding the Fourth Proportional to 485,397.21, 727,523.95 and 218,845.65
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Solution
The fourth proportional to 485,397.21, 727,523.95 and 218,845.65 is: 328,010.64
Step by Step Solution
- Step 1: Write the proportion equation
485,397.21 : 727,523.95 = 218,845.65 : x - Step 2: Convert to fraction form
485,397.21/727,523.95 = 218,845.65/x - Step 3: Cross multiply
485,397.21x = 727,523.95 × 218,845.65 - Step 4: Simplify right side
485,397.21x = 159,215,451,181.20 - Step 5: Solve for x
x = 159,215,451,181.20/485,397.21 - Step 6: Final answer
x = 328,010.64
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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.