Finding the Fourth Proportional to 284,703.18, 392,873.31 and 157,371.18
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Solution
The fourth proportional to 284,703.18, 392,873.31 and 157,371.18 is: 217,162.79
Step by Step Solution
- Step 1: Write the proportion equation
284,703.18 : 392,873.31 = 157,371.18 : x - Step 2: Convert to fraction form
284,703.18/392,873.31 = 157,371.18/x - Step 3: Cross multiply
284,703.18x = 392,873.31 × 157,371.18 - Step 4: Simplify right side
284,703.18x = 61,826,936,385.21 - Step 5: Solve for x
x = 61,826,936,385.21/284,703.18 - Step 6: Final answer
x = 217,162.79
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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.