Finding the Fourth Proportional to 399,373.43, 550,198.68 and 278,294.99
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Solution
The fourth proportional to 399,373.43, 550,198.68 and 278,294.99 is: 383,394.40
Step by Step Solution
- Step 1: Write the proportion equation
399,373.43 : 550,198.68 = 278,294.99 : x - Step 2: Convert to fraction form
399,373.43/550,198.68 = 278,294.99/x - Step 3: Cross multiply
399,373.43x = 550,198.68 × 278,294.99 - Step 4: Simplify right side
399,373.43x = 153,117,536,148.61 - Step 5: Solve for x
x = 153,117,536,148.61/399,373.43 - Step 6: Final answer
x = 383,394.40
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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.