Finding the Fourth Proportional to 285,537.80, 428,306.70 and 272,415.80
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Solution
The fourth proportional to 285,537.80, 428,306.70 and 272,415.80 is: 408,623.70
Step by Step Solution
- Step 1: Write the proportion equation
285,537.80 : 428,306.70 = 272,415.80 : x - Step 2: Convert to fraction form
285,537.80/428,306.70 = 272,415.80/x - Step 3: Cross multiply
285,537.80x = 428,306.70 × 272,415.80 - Step 4: Simplify right side
285,537.80x = 116,677,512,325.86 - Step 5: Solve for x
x = 116,677,512,325.86/285,537.80 - Step 6: Final answer
x = 408,623.70
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1.5x scale
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.