Finding the Fourth Proportional to 376,905.08, 520,138.86 and 207,143.68
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Solution
The fourth proportional to 376,905.08, 520,138.86 and 207,143.68 is: 285,863.69
Step by Step Solution
- Step 1: Write the proportion equation
376,905.08 : 520,138.86 = 207,143.68 : x - Step 2: Convert to fraction form
376,905.08/520,138.86 = 207,143.68/x - Step 3: Cross multiply
376,905.08x = 520,138.86 × 207,143.68 - Step 4: Simplify right side
376,905.08x = 107,743,477,571.41 - Step 5: Solve for x
x = 107,743,477,571.41/376,905.08 - Step 6: Final answer
x = 285,863.69
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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.