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Finding the Fourth Proportional to 219,630.60, 329,810.28 and 137,049.48

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Solution

The fourth proportional to 219,630.60, 329,810.28 and 137,049.48 is: 205,801.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,630.60 : 329,810.28 = 137,049.48 : x
  2. Step 2: Convert to fraction form
    219,630.60/329,810.28 = 137,049.48/x
  3. Step 3: Cross multiply
    219,630.60x = 329,810.28 × 137,049.48
  4. Step 4: Simplify right side
    219,630.60x = 45,200,327,372.65
  5. Step 5: Solve for x
    x = 45,200,327,372.65/219,630.60
  6. Step 6: Final answer
    x = 205,801.59

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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.