Finding the Fourth Proportional to 394,920.68, 544,989.90 and 213,632.05
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Solution
The fourth proportional to 394,920.68, 544,989.90 and 213,632.05 is: 294,811.88
Step by Step Solution
- Step 1: Write the proportion equation
394,920.68 : 544,989.90 = 213,632.05 : x - Step 2: Convert to fraction form
394,920.68/544,989.90 = 213,632.05/x - Step 3: Cross multiply
394,920.68x = 544,989.90 × 213,632.05 - Step 4: Simplify right side
394,920.68x = 116,427,310,026.80 - Step 5: Solve for x
x = 116,427,310,026.80/394,920.68 - Step 6: Final answer
x = 294,811.88
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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.