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Finding the Fourth Proportional to 219,408.64, 329,044.88 and 79,148.96

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Solution

The fourth proportional to 219,408.64, 329,044.88 and 79,148.96 is: 118,698.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,408.64 : 329,044.88 = 79,148.96 : x
  2. Step 2: Convert to fraction form
    219,408.64/329,044.88 = 79,148.96/x
  3. Step 3: Cross multiply
    219,408.64x = 329,044.88 × 79,148.96
  4. Step 4: Simplify right side
    219,408.64x = 26,043,560,045.32
  5. Step 5: Solve for x
    x = 26,043,560,045.32/219,408.64
  6. Step 6: Final answer
    x = 118,698.88

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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.