Finding the Fourth Proportional to 365,621.80, 548,432.70 and 318,965.80
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Solution
The fourth proportional to 365,621.80, 548,432.70 and 318,965.80 is: 478,448.70
Step by Step Solution
- Step 1: Write the proportion equation
365,621.80 : 548,432.70 = 318,965.80 : x - Step 2: Convert to fraction form
365,621.80/548,432.70 = 318,965.80/x - Step 3: Cross multiply
365,621.80x = 548,432.70 × 318,965.80 - Step 4: Simplify right side
365,621.80x = 174,931,274,901.66 - Step 5: Solve for x
x = 174,931,274,901.66/365,621.80 - Step 6: Final answer
x = 478,448.70
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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.