Finding the Fourth Proportional to 307,228.14, 460,919.97 and 85,612.14
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Solution
The fourth proportional to 307,228.14, 460,919.97 and 85,612.14 is: 128,439.88
Step by Step Solution
- Step 1: Write the proportion equation
307,228.14 : 460,919.97 = 85,612.14 : x - Step 2: Convert to fraction form
307,228.14/460,919.97 = 85,612.14/x - Step 3: Cross multiply
307,228.14x = 460,919.97 × 85,612.14 - Step 4: Simplify right side
307,228.14x = 39,460,345,000.44 - Step 5: Solve for x
x = 39,460,345,000.44/307,228.14 - Step 6: Final answer
x = 128,439.88
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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.