Finding the Fourth Proportional to 287,739.70, 402,310.70 and 287,739.70
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Solution
The fourth proportional to 287,739.70, 402,310.70 and 287,739.70 is: 402,310.70
Step by Step Solution
- Step 1: Write the proportion equation
287,739.70 : 402,310.70 = 287,739.70 : x - Step 2: Convert to fraction form
287,739.70/402,310.70 = 287,739.70/x - Step 3: Cross multiply
287,739.70x = 402,310.70 × 287,739.70 - Step 4: Simplify right side
287,739.70x = 115,760,760,124.79 - Step 5: Solve for x
x = 115,760,760,124.79/287,739.70 - Step 6: Final answer
x = 402,310.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.