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Finding the Fourth Proportional to 219,966.69, 330,074.84 and 118,763.39

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Solution

The fourth proportional to 219,966.69, 330,074.84 and 118,763.39 is: 178,212.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,966.69 : 330,074.84 = 118,763.39 : x
  2. Step 2: Convert to fraction form
    219,966.69/330,074.84 = 118,763.39/x
  3. Step 3: Cross multiply
    219,966.69x = 330,074.84 × 118,763.39
  4. Step 4: Simplify right side
    219,966.69x = 39,200,806,952.11
  5. Step 5: Solve for x
    x = 39,200,806,952.11/219,966.69
  6. Step 6: Final answer
    x = 178,212.47

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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.