Finding the Fourth Proportional to 285,246.88, 393,640.69 and 157,930.67
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Solution
The fourth proportional to 285,246.88, 393,640.69 and 157,930.67 is: 217,944.32
Step by Step Solution
- Step 1: Write the proportion equation
285,246.88 : 393,640.69 = 157,930.67 : x - Step 2: Convert to fraction form
285,246.88/393,640.69 = 157,930.67/x - Step 3: Cross multiply
285,246.88x = 393,640.69 × 157,930.67 - Step 4: Simplify right side
285,246.88x = 62,167,937,910.96 - Step 5: Solve for x
x = 62,167,937,910.96/285,246.88 - Step 6: Final answer
x = 217,944.32
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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.