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Finding the Fourth Proportional to 219,745.88, 329,509.77 and 69,966.66

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Solution

The fourth proportional to 219,745.88, 329,509.77 and 69,966.66 is: 104,915.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,745.88 : 329,509.77 = 69,966.66 : x
  2. Step 2: Convert to fraction form
    219,745.88/329,509.77 = 69,966.66/x
  3. Step 3: Cross multiply
    219,745.88x = 329,509.77 × 69,966.66
  4. Step 4: Simplify right side
    219,745.88x = 23,054,698,044.27
  5. Step 5: Solve for x
    x = 23,054,698,044.27/219,745.88
  6. Step 6: Final answer
    x = 104,915.27

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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.