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Finding the Fourth Proportional to 219,888.27, 329,930.82 and 126,394.02

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Solution

The fourth proportional to 219,888.27, 329,930.82 and 126,394.02 is: 189,647.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,888.27 : 329,930.82 = 126,394.02 : x
  2. Step 2: Convert to fraction form
    219,888.27/329,930.82 = 126,394.02/x
  3. Step 3: Cross multiply
    219,888.27x = 329,930.82 × 126,394.02
  4. Step 4: Simplify right side
    219,888.27x = 41,701,282,661.70
  5. Step 5: Solve for x
    x = 41,701,282,661.70/219,888.27
  6. Step 6: Final answer
    x = 189,647.60

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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.