Finding the Fourth Proportional to 394,983.75, 545,077.94 and 216,135.75
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Solution
The fourth proportional to 394,983.75, 545,077.94 and 216,135.75 is: 298,267.53
Step by Step Solution
- Step 1: Write the proportion equation
394,983.75 : 545,077.94 = 216,135.75 : x - Step 2: Convert to fraction form
394,983.75/545,077.94 = 216,135.75/x - Step 3: Cross multiply
394,983.75x = 545,077.94 × 216,135.75 - Step 4: Simplify right side
394,983.75x = 117,810,829,370.36 - Step 5: Solve for x
x = 117,810,829,370.36/394,983.75 - Step 6: Final answer
x = 298,267.53
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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.