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Finding the Fourth Proportional to 275,876.88, 380,376.12 and 214,640.88

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Solution

The fourth proportional to 275,876.88, 380,376.12 and 214,640.88 is: 295,944.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,876.88 : 380,376.12 = 214,640.88 : x
  2. Step 2: Convert to fraction form
    275,876.88/380,376.12 = 214,640.88/x
  3. Step 3: Cross multiply
    275,876.88x = 380,376.12 × 214,640.88
  4. Step 4: Simplify right side
    275,876.88x = 81,644,265,127.79
  5. Step 5: Solve for x
    x = 81,644,265,127.79/275,876.88
  6. Step 6: Final answer
    x = 295,944.57

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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.