Home / 219,115.45-328,709.51-76,923.82

Finding the Fourth Proportional to 219,115.45, 328,709.51 and 76,923.82

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Solution

The fourth proportional to 219,115.45, 328,709.51 and 76,923.82 is: 115,398.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,115.45 : 328,709.51 = 76,923.82 : x
  2. Step 2: Convert to fraction form
    219,115.45/328,709.51 = 76,923.82/x
  3. Step 3: Cross multiply
    219,115.45x = 328,709.51 × 76,923.82
  4. Step 4: Simplify right side
    219,115.45x = 25,285,591,179.53
  5. Step 5: Solve for x
    x = 25,285,591,179.53/219,115.45
  6. Step 6: Final answer
    x = 115,398.49

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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.