Finding the Fourth Proportional to 397,720.05, 548,860.29 and 216,439.62
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Solution
The fourth proportional to 397,720.05, 548,860.29 and 216,439.62 is: 298,690.28
Step by Step Solution
- Step 1: Write the proportion equation
397,720.05 : 548,860.29 = 216,439.62 : x - Step 2: Convert to fraction form
397,720.05/548,860.29 = 216,439.62/x - Step 3: Cross multiply
397,720.05x = 548,860.29 × 216,439.62 - Step 4: Simplify right side
397,720.05x = 118,795,112,600.69 - Step 5: Solve for x
x = 118,795,112,600.69/397,720.05 - Step 6: Final answer
x = 298,690.28
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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.