Finding the Fourth Proportional to 318,756.80, 478,135.20 and 185,787.20
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Solution
The fourth proportional to 318,756.80, 478,135.20 and 185,787.20 is: 278,680.80
Step by Step Solution
- Step 1: Write the proportion equation
318,756.80 : 478,135.20 = 185,787.20 : x - Step 2: Convert to fraction form
318,756.80/478,135.20 = 185,787.20/x - Step 3: Cross multiply
318,756.80x = 478,135.20 × 185,787.20 - Step 4: Simplify right side
318,756.80x = 88,831,400,029.44 - Step 5: Solve for x
x = 88,831,400,029.44/318,756.80 - Step 6: Final answer
x = 278,680.80
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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.