Finding the Fourth Proportional to 379,291.98, 523,378.35 and 209,515.98
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Solution
The fourth proportional to 379,291.98, 523,378.35 and 209,515.98 is: 289,107.43
Step by Step Solution
- Step 1: Write the proportion equation
379,291.98 : 523,378.35 = 209,515.98 : x - Step 2: Convert to fraction form
379,291.98/523,378.35 = 209,515.98/x - Step 3: Cross multiply
379,291.98x = 523,378.35 × 209,515.98 - Step 4: Simplify right side
379,291.98x = 109,656,127,911.03 - Step 5: Solve for x
x = 109,656,127,911.03/379,291.98 - Step 6: Final answer
x = 289,107.43
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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.