Finding the Fourth Proportional to 256,099.70, 384,149.55 and 138,001.70
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Solution
The fourth proportional to 256,099.70, 384,149.55 and 138,001.70 is: 207,002.55
Step by Step Solution
- Step 1: Write the proportion equation
256,099.70 : 384,149.55 = 138,001.70 : x - Step 2: Convert to fraction form
256,099.70/384,149.55 = 138,001.70/x - Step 3: Cross multiply
256,099.70x = 384,149.55 × 138,001.70 - Step 4: Simplify right side
256,099.70x = 53,013,290,954.24 - Step 5: Solve for x
x = 53,013,290,954.24/256,099.70 - Step 6: Final answer
x = 207,002.55
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1.5x scale
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.