Finding the Fourth Proportional to 292,415.20, 438,622.80 and 213,683.20
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Solution
The fourth proportional to 292,415.20, 438,622.80 and 213,683.20 is: 320,524.80
Step by Step Solution
- Step 1: Write the proportion equation
292,415.20 : 438,622.80 = 213,683.20 : x - Step 2: Convert to fraction form
292,415.20/438,622.80 = 213,683.20/x - Step 3: Cross multiply
292,415.20x = 438,622.80 × 213,683.20 - Step 4: Simplify right side
292,415.20x = 93,726,323,496.96 - Step 5: Solve for x
x = 93,726,323,496.96/292,415.20 - Step 6: Final answer
x = 320,524.80
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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.