Finding the Fourth Proportional to 266,090.20, 399,135.30 and 206,603.80
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Solution
The fourth proportional to 266,090.20, 399,135.30 and 206,603.80 is: 309,905.70
Step by Step Solution
- Step 1: Write the proportion equation
266,090.20 : 399,135.30 = 206,603.80 : x - Step 2: Convert to fraction form
266,090.20/399,135.30 = 206,603.80/x - Step 3: Cross multiply
266,090.20x = 399,135.30 × 206,603.80 - Step 4: Simplify right side
266,090.20x = 82,462,869,694.14 - Step 5: Solve for x
x = 82,462,869,694.14/266,090.20 - Step 6: Final answer
x = 309,905.70
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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.