Finding the Fourth Proportional to 381,971.70, 572,539.05 and 192,129.30
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Solution
The fourth proportional to 381,971.70, 572,539.05 and 192,129.30 is: 287,983.45
Step by Step Solution
- Step 1: Write the proportion equation
381,971.70 : 572,539.05 = 192,129.30 : x - Step 2: Convert to fraction form
381,971.70/572,539.05 = 192,129.30/x - Step 3: Cross multiply
381,971.70x = 572,539.05 × 192,129.30 - Step 4: Simplify right side
381,971.70x = 110,001,526,899.17 - Step 5: Solve for x
x = 110,001,526,899.17/381,971.70 - Step 6: Final answer
x = 287,983.45
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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.