Finding the Fourth Proportional to 393,107.20, 589,660.80 and 97,619.20
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Solution
The fourth proportional to 393,107.20, 589,660.80 and 97,619.20 is: 146,428.80
Step by Step Solution
- Step 1: Write the proportion equation
393,107.20 : 589,660.80 = 97,619.20 : x - Step 2: Convert to fraction form
393,107.20/589,660.80 = 97,619.20/x - Step 3: Cross multiply
393,107.20x = 589,660.80 × 97,619.20 - Step 4: Simplify right side
393,107.20x = 57,562,215,567.36 - Step 5: Solve for x
x = 57,562,215,567.36/393,107.20 - Step 6: Final answer
x = 146,428.80
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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.