Finding the Fourth Proportional to 420,486.98, 580,269.57 and 239,198.42
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Solution
The fourth proportional to 420,486.98, 580,269.57 and 239,198.42 is: 330,092.42
Step by Step Solution
- Step 1: Write the proportion equation
420,486.98 : 580,269.57 = 239,198.42 : x - Step 2: Convert to fraction form
420,486.98/580,269.57 = 239,198.42/x - Step 3: Cross multiply
420,486.98x = 580,269.57 × 239,198.42 - Step 4: Simplify right side
420,486.98x = 138,799,564,318.08 - Step 5: Solve for x
x = 138,799,564,318.08/420,486.98 - Step 6: Final answer
x = 330,092.42
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.