Finding the Fourth Proportional to 293,073.12, 438,926.04 and 213,991.20
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Solution
The fourth proportional to 293,073.12, 438,926.04 and 213,991.20 is: 320,487.63
Step by Step Solution
- Step 1: Write the proportion equation
293,073.12 : 438,926.04 = 213,991.20 : x - Step 2: Convert to fraction form
293,073.12/438,926.04 = 213,991.20/x - Step 3: Cross multiply
293,073.12x = 438,926.04 × 213,991.20 - Step 4: Simplify right side
293,073.12x = 93,926,310,010.85 - Step 5: Solve for x
x = 93,926,310,010.85/293,073.12 - Step 6: Final answer
x = 320,487.63
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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.