Finding the Fourth Proportional to 280,153.44, 420,153.84 and 93,140.64
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Solution
The fourth proportional to 280,153.44, 420,153.84 and 93,140.64 is: 139,685.59
Step by Step Solution
- Step 1: Write the proportion equation
280,153.44 : 420,153.84 = 93,140.64 : x - Step 2: Convert to fraction form
280,153.44/420,153.84 = 93,140.64/x - Step 3: Cross multiply
280,153.44x = 420,153.84 × 93,140.64 - Step 4: Simplify right side
280,153.44x = 39,133,397,556.06 - Step 5: Solve for x
x = 39,133,397,556.06/280,153.44 - Step 6: Final answer
x = 139,685.59
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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.