Finding the Fourth Proportional to 280,285.80, 420,428.70 and 201,553.80
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Solution
The fourth proportional to 280,285.80, 420,428.70 and 201,553.80 is: 302,330.70
Step by Step Solution
- Step 1: Write the proportion equation
280,285.80 : 420,428.70 = 201,553.80 : x - Step 2: Convert to fraction form
280,285.80/420,428.70 = 201,553.80/x - Step 3: Cross multiply
280,285.80x = 420,428.70 × 201,553.80 - Step 4: Simplify right side
280,285.80x = 84,739,002,114.06 - Step 5: Solve for x
x = 84,739,002,114.06/280,285.80 - Step 6: Final answer
x = 302,330.70
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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.