Finding the Fourth Proportional to 381,403.62, 526,318.68 and 228,448.30
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Solution
The fourth proportional to 381,403.62, 526,318.68 and 228,448.30 is: 315,247.68
Step by Step Solution
- Step 1: Write the proportion equation
381,403.62 : 526,318.68 = 228,448.30 : x - Step 2: Convert to fraction form
381,403.62/526,318.68 = 228,448.30/x - Step 3: Cross multiply
381,403.62x = 526,318.68 × 228,448.30 - Step 4: Simplify right side
381,403.62x = 120,236,607,704.24 - Step 5: Solve for x
x = 120,236,607,704.24/381,403.62 - Step 6: Final answer
x = 315,247.68
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.