Home / 255,171.97-381,821.83-212,947.82

Finding the Fourth Proportional to 255,171.97, 381,821.83 and 212,947.82

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Solution

The fourth proportional to 255,171.97, 381,821.83 and 212,947.82 is: 318,640.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,171.97 : 381,821.83 = 212,947.82 : x
  2. Step 2: Convert to fraction form
    255,171.97/381,821.83 = 212,947.82/x
  3. Step 3: Cross multiply
    255,171.97x = 381,821.83 × 212,947.82
  4. Step 4: Simplify right side
    255,171.97x = 81,308,126,326.91
  5. Step 5: Solve for x
    x = 81,308,126,326.91/255,171.97
  6. Step 6: Final answer
    x = 318,640.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.