Finding the Fourth Proportional to 285,634.80, 428,257.80 and 135,946.80
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Solution
The fourth proportional to 285,634.80, 428,257.80 and 135,946.80 is: 203,827.68
Step by Step Solution
- Step 1: Write the proportion equation
285,634.80 : 428,257.80 = 135,946.80 : x - Step 2: Convert to fraction form
285,634.80/428,257.80 = 135,946.80/x - Step 3: Cross multiply
285,634.80x = 428,257.80 × 135,946.80 - Step 4: Simplify right side
285,634.80x = 58,220,277,485.04 - Step 5: Solve for x
x = 58,220,277,485.04/285,634.80 - Step 6: Final answer
x = 203,827.68
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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.