Finding the Fourth Proportional to 318,577.80, 477,866.70 and 256,369.80
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Solution
The fourth proportional to 318,577.80, 477,866.70 and 256,369.80 is: 384,554.70
Step by Step Solution
- Step 1: Write the proportion equation
318,577.80 : 477,866.70 = 256,369.80 : x - Step 2: Convert to fraction form
318,577.80/477,866.70 = 256,369.80/x - Step 3: Cross multiply
318,577.80x = 477,866.70 × 256,369.80 - Step 4: Simplify right side
318,577.80x = 122,510,590,305.66 - Step 5: Solve for x
x = 122,510,590,305.66/318,577.80 - Step 6: Final answer
x = 384,554.70
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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.