Finding the Fourth Proportional to 239,419.20, 358,437.60 and 146,107.20
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Solution
The fourth proportional to 239,419.20, 358,437.60 and 146,107.20 is: 218,738.99
Step by Step Solution
- Step 1: Write the proportion equation
239,419.20 : 358,437.60 = 146,107.20 : x - Step 2: Convert to fraction form
239,419.20/358,437.60 = 146,107.20/x - Step 3: Cross multiply
239,419.20x = 358,437.60 × 146,107.20 - Step 4: Simplify right side
239,419.20x = 52,370,314,110.72 - Step 5: Solve for x
x = 52,370,314,110.72/239,419.20 - Step 6: Final answer
x = 218,738.99
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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.