Finding the Fourth Proportional to 221,294.79, 305,387.19 and 120,692.79
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Solution
The fourth proportional to 221,294.79, 305,387.19 and 120,692.79 is: 166,556.26
Step by Step Solution
- Step 1: Write the proportion equation
221,294.79 : 305,387.19 = 120,692.79 : x - Step 2: Convert to fraction form
221,294.79/305,387.19 = 120,692.79/x - Step 3: Cross multiply
221,294.79x = 305,387.19 × 120,692.79 - Step 4: Simplify right side
221,294.79x = 36,858,031,991.36 - Step 5: Solve for x
x = 36,858,031,991.36/221,294.79 - Step 6: Final answer
x = 166,556.26
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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.