Finding the Fourth Proportional to 397,246.21, 548,210.50 and 215,970.32
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Solution
The fourth proportional to 397,246.21, 548,210.50 and 215,970.32 is: 298,044.88
Step by Step Solution
- Step 1: Write the proportion equation
397,246.21 : 548,210.50 = 215,970.32 : x - Step 2: Convert to fraction form
397,246.21/548,210.50 = 215,970.32/x - Step 3: Cross multiply
397,246.21x = 548,210.50 × 215,970.32 - Step 4: Simplify right side
397,246.21x = 118,397,197,942.96 - Step 5: Solve for x
x = 118,397,197,942.96/397,246.21 - Step 6: Final answer
x = 298,044.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.