Finding the Fourth Proportional to 379,149.28, 522,985.70 and 288,306.09
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Solution
The fourth proportional to 379,149.28, 522,985.70 and 288,306.09 is: 397,679.67
Step by Step Solution
- Step 1: Write the proportion equation
379,149.28 : 522,985.70 = 288,306.09 : x - Step 2: Convert to fraction form
379,149.28/522,985.70 = 288,306.09/x - Step 3: Cross multiply
379,149.28x = 522,985.70 × 288,306.09 - Step 4: Simplify right side
379,149.28x = 150,779,962,292.91 - Step 5: Solve for x
x = 150,779,962,292.91/379,149.28 - Step 6: Final answer
x = 397,679.67
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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.