Finding the Fourth Proportional to 217,508.92, 300,176.10 and 122,021.80
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Solution
The fourth proportional to 217,508.92, 300,176.10 and 122,021.80 is: 168,397.82
Step by Step Solution
- Step 1: Write the proportion equation
217,508.92 : 300,176.10 = 122,021.80 : x - Step 2: Convert to fraction form
217,508.92/300,176.10 = 122,021.80/x - Step 3: Cross multiply
217,508.92x = 300,176.10 × 122,021.80 - Step 4: Simplify right side
217,508.92x = 36,628,028,038.98 - Step 5: Solve for x
x = 36,628,028,038.98/217,508.92 - Step 6: Final answer
x = 168,397.82
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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.