Finding the Fourth Proportional to 512,186.40, 768,394.80 and 157,216.80
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Solution
The fourth proportional to 512,186.40, 768,394.80 and 157,216.80 is: 235,860.56
Step by Step Solution
- Step 1: Write the proportion equation
512,186.40 : 768,394.80 = 157,216.80 : x - Step 2: Convert to fraction form
512,186.40/768,394.80 = 157,216.80/x - Step 3: Cross multiply
512,186.40x = 768,394.80 × 157,216.80 - Step 4: Simplify right side
512,186.40x = 120,804,571,592.64 - Step 5: Solve for x
x = 120,804,571,592.64/512,186.40 - Step 6: Final answer
x = 235,860.56
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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.