Finding the Fourth Proportional to 285,310.79, 393,724.08 and 157,983.65
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Solution
The fourth proportional to 285,310.79, 393,724.08 and 157,983.65 is: 218,014.77
Step by Step Solution
- Step 1: Write the proportion equation
285,310.79 : 393,724.08 = 157,983.65 : x - Step 2: Convert to fraction form
285,310.79/393,724.08 = 157,983.65/x - Step 3: Cross multiply
285,310.79x = 393,724.08 × 157,983.65 - Step 4: Simplify right side
285,310.79x = 62,201,967,251.29 - Step 5: Solve for x
x = 62,201,967,251.29/285,310.79 - Step 6: Final answer
x = 218,014.77
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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.