Finding the Fourth Proportional to 280,627.20, 421,125.12 and 103,135.68
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Solution
The fourth proportional to 280,627.20, 421,125.12 and 103,135.68 is: 154,771.26
Step by Step Solution
- Step 1: Write the proportion equation
280,627.20 : 421,125.12 = 103,135.68 : x - Step 2: Convert to fraction form
280,627.20/421,125.12 = 103,135.68/x - Step 3: Cross multiply
280,627.20x = 421,125.12 × 103,135.68 - Step 4: Simplify right side
280,627.20x = 43,433,025,616.28 - Step 5: Solve for x
x = 43,433,025,616.28/280,627.20 - Step 6: Final answer
x = 154,771.26
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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.