Finding the Fourth Proportional to 639,445.24, 958,960.18 and 212,866.48
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Solution
The fourth proportional to 639,445.24, 958,960.18 and 212,866.48 is: 319,230.58
Step by Step Solution
- Step 1: Write the proportion equation
639,445.24 : 958,960.18 = 212,866.48 : x - Step 2: Convert to fraction form
639,445.24/958,960.18 = 212,866.48/x - Step 3: Cross multiply
639,445.24x = 958,960.18 × 212,866.48 - Step 4: Simplify right side
639,445.24x = 204,130,477,976.77 - Step 5: Solve for x
x = 204,130,477,976.77/639,445.24 - Step 6: Final answer
x = 319,230.58
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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.