Finding the Fourth Proportional to 319,117.20, 478,675.80 and 201,310.80
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Solution
The fourth proportional to 319,117.20, 478,675.80 and 201,310.80 is: 301,966.20
Step by Step Solution
- Step 1: Write the proportion equation
319,117.20 : 478,675.80 = 201,310.80 : x - Step 2: Convert to fraction form
319,117.20/478,675.80 = 201,310.80/x - Step 3: Cross multiply
319,117.20x = 478,675.80 × 201,310.80 - Step 4: Simplify right side
319,117.20x = 96,362,608,238.64 - Step 5: Solve for x
x = 96,362,608,238.64/319,117.20 - Step 6: Final answer
x = 301,966.20
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Similar ratio
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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.