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Finding the Fourth Proportional to 275,253.66, 379,335.69 and 214,728.30

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Solution

The fourth proportional to 275,253.66, 379,335.69 and 214,728.30 is: 295,923.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,253.66 : 379,335.69 = 214,728.30 : x
  2. Step 2: Convert to fraction form
    275,253.66/379,335.69 = 214,728.30/x
  3. Step 3: Cross multiply
    275,253.66x = 379,335.69 × 214,728.30
  4. Step 4: Simplify right side
    275,253.66x = 81,454,107,843.03
  5. Step 5: Solve for x
    x = 81,454,107,843.03/275,253.66
  6. Step 6: Final answer
    x = 295,923.80

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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.