Finding the Fourth Proportional to 287,445.38, 396,839.05 and 190,780.34
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Solution
The fourth proportional to 287,445.38, 396,839.05 and 190,780.34 is: 263,385.99
Step by Step Solution
- Step 1: Write the proportion equation
287,445.38 : 396,839.05 = 190,780.34 : x - Step 2: Convert to fraction form
287,445.38/396,839.05 = 190,780.34/x - Step 3: Cross multiply
287,445.38x = 396,839.05 × 190,780.34 - Step 4: Simplify right side
287,445.38x = 75,709,086,423.13 - Step 5: Solve for x
x = 75,709,086,423.13/287,445.38 - Step 6: Final answer
x = 263,385.99
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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.