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Finding the Fourth Proportional to 219,721.38, 303,223.67 and 124,222.38

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Solution

The fourth proportional to 219,721.38, 303,223.67 and 124,222.38 is: 171,431.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,721.38 : 303,223.67 = 124,222.38 : x
  2. Step 2: Convert to fraction form
    219,721.38/303,223.67 = 124,222.38/x
  3. Step 3: Cross multiply
    219,721.38x = 303,223.67 × 124,222.38
  4. Step 4: Simplify right side
    219,721.38x = 37,667,165,959.73
  5. Step 5: Solve for x
    x = 37,667,165,959.73/219,721.38
  6. Step 6: Final answer
    x = 171,431.50

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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.