Finding the Fourth Proportional to 420,120.55, 579,662.64 and 248,042.53
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Solution
The fourth proportional to 420,120.55, 579,662.64 and 248,042.53 is: 342,237.45
Step by Step Solution
- Step 1: Write the proportion equation
420,120.55 : 579,662.64 = 248,042.53 : x - Step 2: Convert to fraction form
420,120.55/579,662.64 = 248,042.53/x - Step 3: Cross multiply
420,120.55x = 579,662.64 × 248,042.53 - Step 4: Simplify right side
420,120.55x = 143,780,987,772.08 - Step 5: Solve for x
x = 143,780,987,772.08/420,120.55 - Step 6: Final answer
x = 342,237.45
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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.