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Finding the Fourth Proportional to 219,886.60, 329,829.90 and 114,910.60

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Solution

The fourth proportional to 219,886.60, 329,829.90 and 114,910.60 is: 172,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,886.60 : 329,829.90 = 114,910.60 : x
  2. Step 2: Convert to fraction form
    219,886.60/329,829.90 = 114,910.60/x
  3. Step 3: Cross multiply
    219,886.60x = 329,829.90 × 114,910.60
  4. Step 4: Simplify right side
    219,886.60x = 37,900,951,706.94
  5. Step 5: Solve for x
    x = 37,900,951,706.94/219,886.60
  6. Step 6: Final answer
    x = 172,365.90

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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.