Finding the Fourth Proportional to 217,023.68, 299,511.52 and 121,528.64
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Solution
The fourth proportional to 217,023.68, 299,511.52 and 121,528.64 is: 167,720.07
Step by Step Solution
- Step 1: Write the proportion equation
217,023.68 : 299,511.52 = 121,528.64 : x - Step 2: Convert to fraction form
217,023.68/299,511.52 = 121,528.64/x - Step 3: Cross multiply
217,023.68x = 299,511.52 × 121,528.64 - Step 4: Simplify right side
217,023.68x = 36,399,227,689.93 - Step 5: Solve for x
x = 36,399,227,689.93/217,023.68 - Step 6: Final answer
x = 167,720.07
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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.