Finding the Fourth Proportional to 257,199.36, 385,658.09 and 79,657.08
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Solution
The fourth proportional to 257,199.36, 385,658.09 and 79,657.08 is: 119,441.96
Step by Step Solution
- Step 1: Write the proportion equation
257,199.36 : 385,658.09 = 79,657.08 : x - Step 2: Convert to fraction form
257,199.36/385,658.09 = 79,657.08/x - Step 3: Cross multiply
257,199.36x = 385,658.09 × 79,657.08 - Step 4: Simplify right side
257,199.36x = 30,720,395,399.49 - Step 5: Solve for x
x = 30,720,395,399.49/257,199.36 - Step 6: Final answer
x = 119,441.96
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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.