Finding the Fourth Proportional to 217,201.83, 299,750.40 and 121,739.28
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Solution
The fourth proportional to 217,201.83, 299,750.40 and 121,739.28 is: 168,006.86
Step by Step Solution
- Step 1: Write the proportion equation
217,201.83 : 299,750.40 = 121,739.28 : x - Step 2: Convert to fraction form
217,201.83/299,750.40 = 121,739.28/x - Step 3: Cross multiply
217,201.83x = 299,750.40 × 121,739.28 - Step 4: Simplify right side
217,201.83x = 36,491,397,875.71 - Step 5: Solve for x
x = 36,491,397,875.71/217,201.83 - Step 6: Final answer
x = 168,006.86
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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.