Finding the Fourth Proportional to 512,221.20, 768,331.80 and 232,285.20
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Solution
The fourth proportional to 512,221.20, 768,331.80 and 232,285.20 is: 348,427.80
Step by Step Solution
- Step 1: Write the proportion equation
512,221.20 : 768,331.80 = 232,285.20 : x - Step 2: Convert to fraction form
512,221.20/768,331.80 = 232,285.20/x - Step 3: Cross multiply
512,221.20x = 768,331.80 × 232,285.20 - Step 4: Simplify right side
512,221.20x = 178,472,105,829.36 - Step 5: Solve for x
x = 178,472,105,829.36/512,221.20 - Step 6: Final answer
x = 348,427.80
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Similar ratio
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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.