Finding the Fourth Proportional to 420,349.96, 630,861.18 and 220,788.03
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Solution
The fourth proportional to 420,349.96, 630,861.18 and 220,788.03 is: 331,358.66
Step by Step Solution
- Step 1: Write the proportion equation
420,349.96 : 630,861.18 = 220,788.03 : x - Step 2: Convert to fraction form
420,349.96/630,861.18 = 220,788.03/x - Step 3: Cross multiply
420,349.96x = 630,861.18 × 220,788.03 - Step 4: Simplify right side
420,349.96x = 139,286,597,135.68 - Step 5: Solve for x
x = 139,286,597,135.68/420,349.96 - Step 6: Final answer
x = 331,358.66
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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.