Finding the Fourth Proportional to 428,253.36, 641,821.95 and 238,706.07
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Solution
The fourth proportional to 428,253.36, 641,821.95 and 238,706.07 is: 357,748.03
Step by Step Solution
- Step 1: Write the proportion equation
428,253.36 : 641,821.95 = 238,706.07 : x - Step 2: Convert to fraction form
428,253.36/641,821.95 = 238,706.07/x - Step 3: Cross multiply
428,253.36x = 641,821.95 × 238,706.07 - Step 4: Simplify right side
428,253.36x = 153,206,795,324.24 - Step 5: Solve for x
x = 153,206,795,324.24/428,253.36 - Step 6: Final answer
x = 357,748.03
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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.