Finding the Fourth Proportional to 415,986.67, 623,979.90 and 135,503.92
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Solution
The fourth proportional to 415,986.67, 623,979.90 and 135,503.92 is: 203,255.85
Step by Step Solution
- Step 1: Write the proportion equation
415,986.67 : 623,979.90 = 135,503.92 : x - Step 2: Convert to fraction form
415,986.67/623,979.90 = 135,503.92/x - Step 3: Cross multiply
415,986.67x = 623,979.90 × 135,503.92 - Step 4: Simplify right side
415,986.67x = 84,551,722,451.21 - Step 5: Solve for x
x = 84,551,722,451.21/415,986.67 - Step 6: Final answer
x = 203,255.85
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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.