Finding the Fourth Proportional to 512,186.40, 768,279.60 and 157,201.20
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Solution
The fourth proportional to 512,186.40, 768,279.60 and 157,201.20 is: 235,801.80
Step by Step Solution
- Step 1: Write the proportion equation
512,186.40 : 768,279.60 = 157,201.20 : x - Step 2: Convert to fraction form
512,186.40/768,279.60 = 157,201.20/x - Step 3: Cross multiply
512,186.40x = 768,279.60 × 157,201.20 - Step 4: Simplify right side
512,186.40x = 120,774,475,055.52 - Step 5: Solve for x
x = 120,774,475,055.52/512,186.40 - Step 6: Final answer
x = 235,801.80
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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.