Finding the Fourth Proportional to 278,961.57, 384,966.68 and 151,638.08
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Solution
The fourth proportional to 278,961.57, 384,966.68 and 151,638.08 is: 209,260.38
Step by Step Solution
- Step 1: Write the proportion equation
278,961.57 : 384,966.68 = 151,638.08 : x - Step 2: Convert to fraction form
278,961.57/384,966.68 = 151,638.08/x - Step 3: Cross multiply
278,961.57x = 384,966.68 × 151,638.08 - Step 4: Simplify right side
278,961.57x = 58,375,605,536.15 - Step 5: Solve for x
x = 58,375,605,536.15/278,961.57 - Step 6: Final answer
x = 209,260.38
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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.