Finding the Fourth Proportional to 385,412.80, 578,119.20 and 273,219.70
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Solution
The fourth proportional to 385,412.80, 578,119.20 and 273,219.70 is: 409,829.55
Step by Step Solution
- Step 1: Write the proportion equation
385,412.80 : 578,119.20 = 273,219.70 : x - Step 2: Convert to fraction form
385,412.80/578,119.20 = 273,219.70/x - Step 3: Cross multiply
385,412.80x = 578,119.20 × 273,219.70 - Step 4: Simplify right side
385,412.80x = 157,953,554,388.24 - Step 5: Solve for x
x = 157,953,554,388.24/385,412.80 - Step 6: Final answer
x = 409,829.55
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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.