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Finding the Fourth Proportional to 219,752.80, 329,629.20 and 79,478.62

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Solution

The fourth proportional to 219,752.80, 329,629.20 and 79,478.62 is: 119,217.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,752.80 : 329,629.20 = 79,478.62 : x
  2. Step 2: Convert to fraction form
    219,752.80/329,629.20 = 79,478.62/x
  3. Step 3: Cross multiply
    219,752.80x = 329,629.20 × 79,478.62
  4. Step 4: Simplify right side
    219,752.80x = 26,198,473,927.70
  5. Step 5: Solve for x
    x = 26,198,473,927.70/219,752.80
  6. Step 6: Final answer
    x = 119,217.93

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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.