Finding the Fourth Proportional to 397,396.28, 548,409.44 and 216,110.18
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Solution
The fourth proportional to 397,396.28, 548,409.44 and 216,110.18 is: 298,233.45
Step by Step Solution
- Step 1: Write the proportion equation
397,396.28 : 548,409.44 = 216,110.18 : x - Step 2: Convert to fraction form
397,396.28/548,409.44 = 216,110.18/x - Step 3: Cross multiply
397,396.28x = 548,409.44 × 216,110.18 - Step 4: Simplify right side
397,396.28x = 118,516,862,792.10 - Step 5: Solve for x
x = 118,516,862,792.10/397,396.28 - Step 6: Final answer
x = 298,233.45
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1.5x scale
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.