Finding the Fourth Proportional to 288,102.20, 432,153.30 and 77,739.80
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Solution
The fourth proportional to 288,102.20, 432,153.30 and 77,739.80 is: 116,609.70
Step by Step Solution
- Step 1: Write the proportion equation
288,102.20 : 432,153.30 = 77,739.80 : x - Step 2: Convert to fraction form
288,102.20/432,153.30 = 77,739.80/x - Step 3: Cross multiply
288,102.20x = 432,153.30 × 77,739.80 - Step 4: Simplify right side
288,102.20x = 33,595,511,111.34 - Step 5: Solve for x
x = 33,595,511,111.34/288,102.20 - Step 6: Final answer
x = 116,609.70
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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.