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Finding the Fourth Proportional to 404,072.64, 606,283.76 and 216,865.44

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Solution

The fourth proportional to 404,072.64, 606,283.76 and 216,865.44 is: 325,391.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,072.64 : 606,283.76 = 216,865.44 : x
  2. Step 2: Convert to fraction form
    404,072.64/606,283.76 = 216,865.44/x
  3. Step 3: Cross multiply
    404,072.64x = 606,283.76 × 216,865.44
  4. Step 4: Simplify right side
    404,072.64x = 131,481,994,377.25
  5. Step 5: Solve for x
    x = 131,481,994,377.25/404,072.64
  6. Step 6: Final answer
    x = 325,391.98

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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.