Finding the Fourth Proportional to 256,911.48, 385,225.74 and 79,369.20
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Solution
The fourth proportional to 256,911.48, 385,225.74 and 79,369.20 is: 119,010.09
Step by Step Solution
- Step 1: Write the proportion equation
256,911.48 : 385,225.74 = 79,369.20 : x - Step 2: Convert to fraction form
256,911.48/385,225.74 = 79,369.20/x - Step 3: Cross multiply
256,911.48x = 385,225.74 × 79,369.20 - Step 4: Simplify right side
256,911.48x = 30,575,058,803.21 - Step 5: Solve for x
x = 30,575,058,803.21/256,911.48 - Step 6: Final answer
x = 119,010.09
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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.