Finding the Fourth Proportional to 287,686.43, 397,177.37 and 255,766.99
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Solution
The fourth proportional to 287,686.43, 397,177.37 and 255,766.99 is: 353,109.67
Step by Step Solution
- Step 1: Write the proportion equation
287,686.43 : 397,177.37 = 255,766.99 : x - Step 2: Convert to fraction form
287,686.43/397,177.37 = 255,766.99/x - Step 3: Cross multiply
287,686.43x = 397,177.37 × 255,766.99 - Step 4: Simplify right side
287,686.43x = 101,584,860,970.13 - Step 5: Solve for x
x = 101,584,860,970.13/287,686.43 - Step 6: Final answer
x = 353,109.67
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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.