Finding the Fourth Proportional to 303,609.87, 455,431.21 and 78,970.80
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Solution
The fourth proportional to 303,609.87, 455,431.21 and 78,970.80 is: 118,460.46
Step by Step Solution
- Step 1: Write the proportion equation
303,609.87 : 455,431.21 = 78,970.80 : x - Step 2: Convert to fraction form
303,609.87/455,431.21 = 78,970.80/x - Step 3: Cross multiply
303,609.87x = 455,431.21 × 78,970.80 - Step 4: Simplify right side
303,609.87x = 35,965,765,947.31 - Step 5: Solve for x
x = 35,965,765,947.31/303,609.87 - Step 6: Final answer
x = 118,460.46
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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.