Finding the Fourth Proportional to 415,821.36, 623,732.12 and 135,338.64
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Solution
The fourth proportional to 415,821.36, 623,732.12 and 135,338.64 is: 203,007.99
Step by Step Solution
- Step 1: Write the proportion equation
415,821.36 : 623,732.12 = 135,338.64 : x - Step 2: Convert to fraction form
415,821.36/623,732.12 = 135,338.64/x - Step 3: Cross multiply
415,821.36x = 623,732.12 × 135,338.64 - Step 4: Simplify right side
415,821.36x = 84,415,056,845.12 - Step 5: Solve for x
x = 84,415,056,845.12/415,821.36 - Step 6: Final answer
x = 203,007.99
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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.