Finding the Fourth Proportional to 285,309.79, 393,722.70 and 157,982.65
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Solution
The fourth proportional to 285,309.79, 393,722.70 and 157,982.65 is: 218,013.39
Step by Step Solution
- Step 1: Write the proportion equation
285,309.79 : 393,722.70 = 157,982.65 : x - Step 2: Convert to fraction form
285,309.79/393,722.70 = 157,982.65/x - Step 3: Cross multiply
285,309.79x = 393,722.70 × 157,982.65 - Step 4: Simplify right side
285,309.79x = 62,201,355,511.16 - Step 5: Solve for x
x = 62,201,355,511.16/285,309.79 - Step 6: Final answer
x = 218,013.39
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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.