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Finding the Fourth Proportional to 269,636.80, 404,455.20 and 217,148.80

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Solution

The fourth proportional to 269,636.80, 404,455.20 and 217,148.80 is: 325,723.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,636.80 : 404,455.20 = 217,148.80 : x
  2. Step 2: Convert to fraction form
    269,636.80/404,455.20 = 217,148.80/x
  3. Step 3: Cross multiply
    269,636.80x = 404,455.20 × 217,148.80
  4. Step 4: Simplify right side
    269,636.80x = 87,826,961,333.76
  5. Step 5: Solve for x
    x = 87,826,961,333.76/269,636.80
  6. Step 6: Final answer
    x = 325,723.20

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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.