Finding the Fourth Proportional to 257,119.80, 385,679.70 and 252,745.80
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Solution
The fourth proportional to 257,119.80, 385,679.70 and 252,745.80 is: 379,118.70
Step by Step Solution
- Step 1: Write the proportion equation
257,119.80 : 385,679.70 = 252,745.80 : x - Step 2: Convert to fraction form
257,119.80/385,679.70 = 252,745.80/x - Step 3: Cross multiply
257,119.80x = 385,679.70 × 252,745.80 - Step 4: Simplify right side
257,119.80x = 97,478,924,320.26 - Step 5: Solve for x
x = 97,478,924,320.26/257,119.80 - Step 6: Final answer
x = 379,118.70
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1.5x scale
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.