Finding the Fourth Proportional to 775,420.50, 1,163,130.75 and 214,455
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Solution
The fourth proportional to 775,420.50, 1,163,130.75 and 214,455 is: 321,682.50
Step by Step Solution
- Step 1: Write the proportion equation
775,420.50 : 1,163,130.75 = 214,455 : x - Step 2: Convert to fraction form
775,420.50/1,163,130.75 = 214,455/x - Step 3: Cross multiply
775,420.50x = 1,163,130.75 × 214,455 - Step 4: Simplify right side
775,420.50x = 249,439,204,991.25 - Step 5: Solve for x
x = 249,439,204,991.25/775,420.50 - Step 6: Final answer
x = 321,682.50
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Similar ratio
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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.