Finding the Fourth Proportional to 415,819.36, 623,729.12 and 135,336.64
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Solution
The fourth proportional to 415,819.36, 623,729.12 and 135,336.64 is: 203,004.99
Step by Step Solution
- Step 1: Write the proportion equation
415,819.36 : 623,729.12 = 135,336.64 : x - Step 2: Convert to fraction form
415,819.36/623,729.12 = 135,336.64/x - Step 3: Cross multiply
415,819.36x = 623,729.12 × 135,336.64 - Step 4: Simplify right side
415,819.36x = 84,413,403,370.96 - Step 5: Solve for x
x = 84,413,403,370.96/415,819.36 - Step 6: Final answer
x = 203,004.99
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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.