Finding the Fourth Proportional to 285,306.42, 393,722.79 and 157,981.98
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Solution
The fourth proportional to 285,306.42, 393,722.79 and 157,981.98 is: 218,015.09
Step by Step Solution
- Step 1: Write the proportion equation
285,306.42 : 393,722.79 = 157,981.98 : x - Step 2: Convert to fraction form
285,306.42/393,722.79 = 157,981.98/x - Step 3: Cross multiply
285,306.42x = 393,722.79 × 157,981.98 - Step 4: Simplify right side
285,306.42x = 62,201,105,935.32 - Step 5: Solve for x
x = 62,201,105,935.32/285,306.42 - Step 6: Final answer
x = 218,015.09
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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.