Finding the Fourth Proportional to 292,292.20, 438,438.30 and 81,965.80
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Solution
The fourth proportional to 292,292.20, 438,438.30 and 81,965.80 is: 122,948.70
Step by Step Solution
- Step 1: Write the proportion equation
292,292.20 : 438,438.30 = 81,965.80 : x - Step 2: Convert to fraction form
292,292.20/438,438.30 = 81,965.80/x - Step 3: Cross multiply
292,292.20x = 438,438.30 × 81,965.80 - Step 4: Simplify right side
292,292.20x = 35,936,946,010.14 - Step 5: Solve for x
x = 35,936,946,010.14/292,292.20 - Step 6: Final answer
x = 122,948.70
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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.