Finding the Fourth Proportional to 398,886.53, 598,440.50 and 221,518.09
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Solution
The fourth proportional to 398,886.53, 598,440.50 and 221,518.09 is: 332,338.62
Step by Step Solution
- Step 1: Write the proportion equation
398,886.53 : 598,440.50 = 221,518.09 : x - Step 2: Convert to fraction form
398,886.53/598,440.50 = 221,518.09/x - Step 3: Cross multiply
398,886.53x = 598,440.50 × 221,518.09 - Step 4: Simplify right side
398,886.53x = 132,565,396,386.78 - Step 5: Solve for x
x = 132,565,396,386.78/398,886.53 - Step 6: Final answer
x = 332,338.62
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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.