Finding the Fourth Proportional to 229,734.96, 317,048.76 and 129,139.44
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Solution
The fourth proportional to 229,734.96, 317,048.76 and 129,139.44 is: 178,220.59
Step by Step Solution
- Step 1: Write the proportion equation
229,734.96 : 317,048.76 = 129,139.44 : x - Step 2: Convert to fraction form
229,734.96/317,048.76 = 129,139.44/x - Step 3: Cross multiply
229,734.96x = 317,048.76 × 129,139.44 - Step 4: Simplify right side
229,734.96x = 40,943,499,319.09 - Step 5: Solve for x
x = 40,943,499,319.09/229,734.96 - Step 6: Final answer
x = 178,220.59
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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.