Finding the Fourth Proportional to 420,040.20, 630,182.34 and 135,724.80
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Solution
The fourth proportional to 420,040.20, 630,182.34 and 135,724.80 is: 203,626.63
Step by Step Solution
- Step 1: Write the proportion equation
420,040.20 : 630,182.34 = 135,724.80 : x - Step 2: Convert to fraction form
420,040.20/630,182.34 = 135,724.80/x - Step 3: Cross multiply
420,040.20x = 630,182.34 × 135,724.80 - Step 4: Simplify right side
420,040.20x = 85,531,372,060.03 - Step 5: Solve for x
x = 85,531,372,060.03/420,040.20 - Step 6: Final answer
x = 203,626.63
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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.