Finding the Fourth Proportional to 217,354.28, 299,948.10 and 121,860.92
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Solution
The fourth proportional to 217,354.28, 299,948.10 and 121,860.92 is: 168,167.62
Step by Step Solution
- Step 1: Write the proportion equation
217,354.28 : 299,948.10 = 121,860.92 : x - Step 2: Convert to fraction form
217,354.28/299,948.10 = 121,860.92/x - Step 3: Cross multiply
217,354.28x = 299,948.10 × 121,860.92 - Step 4: Simplify right side
217,354.28x = 36,551,951,418.25 - Step 5: Solve for x
x = 36,551,951,418.25/217,354.28 - Step 6: Final answer
x = 168,167.62
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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.