Finding the Fourth Proportional to 292,420.80, 437,659.20 and 212,230.80
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Solution
The fourth proportional to 292,420.80, 437,659.20 and 212,230.80 is: 317,640.75
Step by Step Solution
- Step 1: Write the proportion equation
292,420.80 : 437,659.20 = 212,230.80 : x - Step 2: Convert to fraction form
292,420.80/437,659.20 = 212,230.80/x - Step 3: Cross multiply
292,420.80x = 437,659.20 × 212,230.80 - Step 4: Simplify right side
292,420.80x = 92,884,762,143.36 - Step 5: Solve for x
x = 92,884,762,143.36/292,420.80 - Step 6: Final answer
x = 317,640.75
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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.