Finding the Fourth Proportional to 218,915.70, 328,373.55 and 140,183.70
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Solution
The fourth proportional to 218,915.70, 328,373.55 and 140,183.70 is: 210,275.55
Step by Step Solution
- Step 1: Write the proportion equation
218,915.70 : 328,373.55 = 140,183.70 : x - Step 2: Convert to fraction form
218,915.70/328,373.55 = 140,183.70/x - Step 3: Cross multiply
218,915.70x = 328,373.55 × 140,183.70 - Step 4: Simplify right side
218,915.70x = 46,032,619,221.14 - Step 5: Solve for x
x = 46,032,619,221.14/218,915.70 - Step 6: Final answer
x = 210,275.55
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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.