Finding the Fourth Proportional to 403,821.28, 557,042.16 and 252,655.84
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Solution
The fourth proportional to 403,821.28, 557,042.16 and 252,655.84 is: 348,520.40
Step by Step Solution
- Step 1: Write the proportion equation
403,821.28 : 557,042.16 = 252,655.84 : x - Step 2: Convert to fraction form
403,821.28/557,042.16 = 252,655.84/x - Step 3: Cross multiply
403,821.28x = 557,042.16 × 252,655.84 - Step 4: Simplify right side
403,821.28x = 140,739,954,850.21 - Step 5: Solve for x
x = 140,739,954,850.21/403,821.28 - Step 6: Final answer
x = 348,520.40
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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.