Finding the Fourth Proportional to 262,087.28, 393,092.52 and 128,931.92
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Solution
The fourth proportional to 262,087.28, 393,092.52 and 128,931.92 is: 193,378.99
Step by Step Solution
- Step 1: Write the proportion equation
262,087.28 : 393,092.52 = 128,931.92 : x - Step 2: Convert to fraction form
262,087.28/393,092.52 = 128,931.92/x - Step 3: Cross multiply
262,087.28x = 393,092.52 × 128,931.92 - Step 4: Simplify right side
262,087.28x = 50,682,173,341.24 - Step 5: Solve for x
x = 50,682,173,341.24/262,087.28 - Step 6: Final answer
x = 193,378.99
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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.