Finding the Fourth Proportional to 393,730.80, 590,207.40 and 193,887.60
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Solution
The fourth proportional to 393,730.80, 590,207.40 and 193,887.60 is: 290,639.94
Step by Step Solution
- Step 1: Write the proportion equation
393,730.80 : 590,207.40 = 193,887.60 : x - Step 2: Convert to fraction form
393,730.80/590,207.40 = 193,887.60/x - Step 3: Cross multiply
393,730.80x = 590,207.40 × 193,887.60 - Step 4: Simplify right side
393,730.80x = 114,433,896,288.24 - Step 5: Solve for x
x = 114,433,896,288.24/393,730.80 - Step 6: Final answer
x = 290,639.94
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.