Finding the Fourth Proportional to 319,117.62, 478,720.17 and 141,620.70
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Solution
The fourth proportional to 319,117.62, 478,720.17 and 141,620.70 is: 212,450.46
Step by Step Solution
- Step 1: Write the proportion equation
319,117.62 : 478,720.17 = 141,620.70 : x - Step 2: Convert to fraction form
319,117.62/478,720.17 = 141,620.70/x - Step 3: Cross multiply
319,117.62x = 478,720.17 × 141,620.70 - Step 4: Simplify right side
319,117.62x = 67,796,685,579.52 - Step 5: Solve for x
x = 67,796,685,579.52/319,117.62 - Step 6: Final answer
x = 212,450.46
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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.