Finding the Fourth Proportional to 199,610.20, 299,415.30 and 99,785.80
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Solution
The fourth proportional to 199,610.20, 299,415.30 and 99,785.80 is: 149,678.70
Step by Step Solution
- Step 1: Write the proportion equation
199,610.20 : 299,415.30 = 99,785.80 : x - Step 2: Convert to fraction form
199,610.20/299,415.30 = 99,785.80/x - Step 3: Cross multiply
199,610.20x = 299,415.30 × 99,785.80 - Step 4: Simplify right side
199,610.20x = 29,877,395,242.74 - Step 5: Solve for x
x = 29,877,395,242.74/199,610.20 - Step 6: Final answer
x = 149,678.70
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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.