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Finding the Fourth Proportional to 404,007.20, 606,010.80 and 339,053.30

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Solution

The fourth proportional to 404,007.20, 606,010.80 and 339,053.30 is: 508,579.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,007.20 : 606,010.80 = 339,053.30 : x
  2. Step 2: Convert to fraction form
    404,007.20/606,010.80 = 339,053.30/x
  3. Step 3: Cross multiply
    404,007.20x = 606,010.80 × 339,053.30
  4. Step 4: Simplify right side
    404,007.20x = 205,469,961,575.64
  5. Step 5: Solve for x
    x = 205,469,961,575.64/404,007.20
  6. Step 6: Final answer
    x = 508,579.95

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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.