Finding the Fourth Proportional to 320,958.42, 442,937.82 and 193,631.28
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Solution
The fourth proportional to 320,958.42, 442,937.82 and 193,631.28 is: 267,220.34
Step by Step Solution
- Step 1: Write the proportion equation
320,958.42 : 442,937.82 = 193,631.28 : x - Step 2: Convert to fraction form
320,958.42/442,937.82 = 193,631.28/x - Step 3: Cross multiply
320,958.42x = 442,937.82 × 193,631.28 - Step 4: Simplify right side
320,958.42x = 85,766,617,047.01 - Step 5: Solve for x
x = 85,766,617,047.01/320,958.42 - Step 6: Final answer
x = 267,220.34
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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.