Finding the Fourth Proportional to 420,408.32, 580,175.80 and 229,433.99
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Solution
The fourth proportional to 420,408.32, 580,175.80 and 229,433.99 is: 316,625.62
Step by Step Solution
- Step 1: Write the proportion equation
420,408.32 : 580,175.80 = 229,433.99 : x - Step 2: Convert to fraction form
420,408.32/580,175.80 = 229,433.99/x - Step 3: Cross multiply
420,408.32x = 580,175.80 × 229,433.99 - Step 4: Simplify right side
420,408.32x = 133,112,045,220.98 - Step 5: Solve for x
x = 133,112,045,220.98/420,408.32 - Step 6: Final answer
x = 316,625.62
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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.