Finding the Fourth Proportional to 398,343.70, 597,515.55 and 102,855.70
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Solution
The fourth proportional to 398,343.70, 597,515.55 and 102,855.70 is: 154,283.55
Step by Step Solution
- Step 1: Write the proportion equation
398,343.70 : 597,515.55 = 102,855.70 : x - Step 2: Convert to fraction form
398,343.70/597,515.55 = 102,855.70/x - Step 3: Cross multiply
398,343.70x = 597,515.55 × 102,855.70 - Step 4: Simplify right side
398,343.70x = 61,457,880,156.14 - Step 5: Solve for x
x = 61,457,880,156.14/398,343.70 - Step 6: Final answer
x = 154,283.55
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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.