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Finding the Fourth Proportional to 404,005.20, 606,007.80 and 339,051.30

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Solution

The fourth proportional to 404,005.20, 606,007.80 and 339,051.30 is: 508,576.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,005.20 : 606,007.80 = 339,051.30 : x
  2. Step 2: Convert to fraction form
    404,005.20/606,007.80 = 339,051.30/x
  3. Step 3: Cross multiply
    404,005.20x = 606,007.80 × 339,051.30
  4. Step 4: Simplify right side
    404,005.20x = 205,467,732,400.14
  5. Step 5: Solve for x
    x = 205,467,732,400.14/404,005.20
  6. Step 6: Final answer
    x = 508,576.95

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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.