Finding the Fourth Proportional to 216,727.20, 324,988.74 and 140,702.76
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Solution
The fourth proportional to 216,727.20, 324,988.74 and 140,702.76 is: 210,987.88
Step by Step Solution
- Step 1: Write the proportion equation
216,727.20 : 324,988.74 = 140,702.76 : x - Step 2: Convert to fraction form
216,727.20/324,988.74 = 140,702.76/x - Step 3: Cross multiply
216,727.20x = 324,988.74 × 140,702.76 - Step 4: Simplify right side
216,727.20x = 45,726,812,686.92 - Step 5: Solve for x
x = 45,726,812,686.92/216,727.20 - Step 6: Final answer
x = 210,987.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.