Finding the Fourth Proportional to 274,842.09, 379,278.59 and 153,981.09
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Solution
The fourth proportional to 274,842.09, 379,278.59 and 153,981.09 is: 212,491.94
Step by Step Solution
- Step 1: Write the proportion equation
274,842.09 : 379,278.59 = 153,981.09 : x - Step 2: Convert to fraction form
274,842.09/379,278.59 = 153,981.09/x - Step 3: Cross multiply
274,842.09x = 379,278.59 × 153,981.09 - Step 4: Simplify right side
274,842.09x = 58,401,729,931.96 - Step 5: Solve for x
x = 58,401,729,931.96/274,842.09 - Step 6: Final answer
x = 212,491.94
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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.