Finding the Fourth Proportional to 248,072.20, 372,108.30 and 129,779.80
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Solution
The fourth proportional to 248,072.20, 372,108.30 and 129,779.80 is: 194,669.70
Step by Step Solution
- Step 1: Write the proportion equation
248,072.20 : 372,108.30 = 129,779.80 : x - Step 2: Convert to fraction form
248,072.20/372,108.30 = 129,779.80/x - Step 3: Cross multiply
248,072.20x = 372,108.30 × 129,779.80 - Step 4: Simplify right side
248,072.20x = 48,292,140,752.34 - Step 5: Solve for x
x = 48,292,140,752.34/248,072.20 - Step 6: Final answer
x = 194,669.70
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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.