Finding the Fourth Proportional to 398,703.77, 550,201.21 and 217,419.19
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Solution
The fourth proportional to 398,703.77, 550,201.21 and 217,419.19 is: 300,033.03
Step by Step Solution
- Step 1: Write the proportion equation
398,703.77 : 550,201.21 = 217,419.19 : x - Step 2: Convert to fraction form
398,703.77/550,201.21 = 217,419.19/x - Step 3: Cross multiply
398,703.77x = 550,201.21 × 217,419.19 - Step 4: Simplify right side
398,703.77x = 119,624,299,496.17 - Step 5: Solve for x
x = 119,624,299,496.17/398,703.77 - Step 6: Final answer
x = 300,033.03
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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.