Finding the Fourth Proportional to 278,931.10, 385,110.29 and 214,285.20
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Solution
The fourth proportional to 278,931.10, 385,110.29 and 214,285.20 is: 295,855.99
Step by Step Solution
- Step 1: Write the proportion equation
278,931.10 : 385,110.29 = 214,285.20 : x - Step 2: Convert to fraction form
278,931.10/385,110.29 = 214,285.20/x - Step 3: Cross multiply
278,931.10x = 385,110.29 × 214,285.20 - Step 4: Simplify right side
278,931.10x = 82,523,435,514.71 - Step 5: Solve for x
x = 82,523,435,514.71/278,931.10 - Step 6: Final answer
x = 295,855.99
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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.