Finding the Fourth Proportional to 512,555.10, 768,832.65 and 217,643.10
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Solution
The fourth proportional to 512,555.10, 768,832.65 and 217,643.10 is: 326,464.65
Step by Step Solution
- Step 1: Write the proportion equation
512,555.10 : 768,832.65 = 217,643.10 : x - Step 2: Convert to fraction form
512,555.10/768,832.65 = 217,643.10/x - Step 3: Cross multiply
512,555.10x = 768,832.65 × 217,643.10 - Step 4: Simplify right side
512,555.10x = 167,331,121,327.22 - Step 5: Solve for x
x = 167,331,121,327.22/512,555.10 - Step 6: Final answer
x = 326,464.65
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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.