Finding the Fourth Proportional to 285,299.28, 393,708.19 and 157,972.14
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Solution
The fourth proportional to 285,299.28, 393,708.19 and 157,972.14 is: 217,998.89
Step by Step Solution
- Step 1: Write the proportion equation
285,299.28 : 393,708.19 = 157,972.14 : x - Step 2: Convert to fraction form
285,299.28/393,708.19 = 157,972.14/x - Step 3: Cross multiply
285,299.28x = 393,708.19 × 157,972.14 - Step 4: Simplify right side
285,299.28x = 62,194,925,309.83 - Step 5: Solve for x
x = 62,194,925,309.83/285,299.28 - Step 6: Final answer
x = 217,998.89
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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.