Finding the Fourth Proportional to 278,648.39, 384,652.52 and 188,126.99
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Solution
The fourth proportional to 278,648.39, 384,652.52 and 188,126.99 is: 259,694.74
Step by Step Solution
- Step 1: Write the proportion equation
278,648.39 : 384,652.52 = 188,126.99 : x - Step 2: Convert to fraction form
278,648.39/384,652.52 = 188,126.99/x - Step 3: Cross multiply
278,648.39x = 384,652.52 × 188,126.99 - Step 4: Simplify right side
278,648.39x = 72,363,520,783.51 - Step 5: Solve for x
x = 72,363,520,783.51/278,648.39 - Step 6: Final answer
x = 259,694.74
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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.