Finding the Fourth Proportional to 257,246.40, 385,707.60 and 107,590.80
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Solution
The fourth proportional to 257,246.40, 385,707.60 and 107,590.80 is: 161,318.45
Step by Step Solution
- Step 1: Write the proportion equation
257,246.40 : 385,707.60 = 107,590.80 : x - Step 2: Convert to fraction form
257,246.40/385,707.60 = 107,590.80/x - Step 3: Cross multiply
257,246.40x = 385,707.60 × 107,590.80 - Step 4: Simplify right side
257,246.40x = 41,498,589,250.08 - Step 5: Solve for x
x = 41,498,589,250.08/257,246.40 - Step 6: Final answer
x = 161,318.45
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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.