Finding the Fourth Proportional to 387,121.36, 534,219.60 and 217,355.44
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Solution
The fourth proportional to 387,121.36, 534,219.60 and 217,355.44 is: 299,946.08
Step by Step Solution
- Step 1: Write the proportion equation
387,121.36 : 534,219.60 = 217,355.44 : x - Step 2: Convert to fraction form
387,121.36/534,219.60 = 217,355.44/x - Step 3: Cross multiply
387,121.36x = 534,219.60 × 217,355.44 - Step 4: Simplify right side
387,121.36x = 116,115,536,214.62 - Step 5: Solve for x
x = 116,115,536,214.62/387,121.36 - Step 6: Final answer
x = 299,946.08
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.