Finding the Fourth Proportional to 519,721.97, 717,216.31 and 281,257.97
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Solution
The fourth proportional to 519,721.97, 717,216.31 and 281,257.97 is: 388,135.99
Step by Step Solution
- Step 1: Write the proportion equation
519,721.97 : 717,216.31 = 281,257.97 : x - Step 2: Convert to fraction form
519,721.97/717,216.31 = 281,257.97/x - Step 3: Cross multiply
519,721.97x = 717,216.31 × 281,257.97 - Step 4: Simplify right side
519,721.97x = 201,722,803,401.49 - Step 5: Solve for x
x = 201,722,803,401.49/519,721.97 - Step 6: Final answer
x = 388,135.99
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1.5x scale
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.