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Finding the Fourth Proportional to 219,805.53, 329,704.71 and 70,043.79

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Solution

The fourth proportional to 219,805.53, 329,704.71 and 70,043.79 is: 105,064.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,805.53 : 329,704.71 = 70,043.79 : x
  2. Step 2: Convert to fraction form
    219,805.53/329,704.71 = 70,043.79/x
  3. Step 3: Cross multiply
    219,805.53x = 329,704.71 × 70,043.79
  4. Step 4: Simplify right side
    219,805.53x = 23,093,767,469.25
  5. Step 5: Solve for x
    x = 23,093,767,469.25/219,805.53
  6. Step 6: Final answer
    x = 105,064.54

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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.