Finding the Fourth Proportional to 217,214.56, 299,725.68 and 121,713.76
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Solution
The fourth proportional to 217,214.56, 299,725.68 and 121,713.76 is: 167,947.95
Step by Step Solution
- Step 1: Write the proportion equation
217,214.56 : 299,725.68 = 121,713.76 : x - Step 2: Convert to fraction form
217,214.56/299,725.68 = 121,713.76/x - Step 3: Cross multiply
217,214.56x = 299,725.68 × 121,713.76 - Step 4: Simplify right side
217,214.56x = 36,480,739,481.36 - Step 5: Solve for x
x = 36,480,739,481.36/217,214.56 - Step 6: Final answer
x = 167,947.95
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1.5x scale
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.