Finding the Fourth Proportional to 217,078.83, 299,580.08 and 121,579.95
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Solution
The fourth proportional to 217,078.83, 299,580.08 and 121,579.95 is: 167,786.65
Step by Step Solution
- Step 1: Write the proportion equation
217,078.83 : 299,580.08 = 121,579.95 : x - Step 2: Convert to fraction form
217,078.83/299,580.08 = 121,579.95/x - Step 3: Cross multiply
217,078.83x = 299,580.08 × 121,579.95 - Step 4: Simplify right side
217,078.83x = 36,422,930,539.50 - Step 5: Solve for x
x = 36,422,930,539.50/217,078.83 - Step 6: Final answer
x = 167,786.65
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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.