Finding the Fourth Proportional to 280,542.10, 420,813.15 and 168,567.70
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Solution
The fourth proportional to 280,542.10, 420,813.15 and 168,567.70 is: 252,851.55
Step by Step Solution
- Step 1: Write the proportion equation
280,542.10 : 420,813.15 = 168,567.70 : x - Step 2: Convert to fraction form
280,542.10/420,813.15 = 168,567.70/x - Step 3: Cross multiply
280,542.10x = 420,813.15 × 168,567.70 - Step 4: Simplify right side
280,542.10x = 70,935,504,825.26 - Step 5: Solve for x
x = 70,935,504,825.26/280,542.10 - Step 6: Final answer
x = 252,851.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.