Finding the Fourth Proportional to 320,976.14, 442,941.64 and 177,733.10
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Solution
The fourth proportional to 320,976.14, 442,941.64 and 177,733.10 is: 245,268.68
Step by Step Solution
- Step 1: Write the proportion equation
320,976.14 : 442,941.64 = 177,733.10 : x - Step 2: Convert to fraction form
320,976.14/442,941.64 = 177,733.10/x - Step 3: Cross multiply
320,976.14x = 442,941.64 × 177,733.10 - Step 4: Simplify right side
320,976.14x = 78,725,391,459.31 - Step 5: Solve for x
x = 78,725,391,459.31/320,976.14 - Step 6: Final answer
x = 245,268.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.