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Finding the Fourth Proportional to 404,360.20, 606,929.10 and 204,905.80

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Solution

The fourth proportional to 404,360.20, 606,929.10 and 204,905.80 is: 307,555.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,360.20 : 606,929.10 = 204,905.80 : x
  2. Step 2: Convert to fraction form
    404,360.20/606,929.10 = 204,905.80/x
  3. Step 3: Cross multiply
    404,360.20x = 606,929.10 × 204,905.80
  4. Step 4: Simplify right side
    404,360.20x = 124,363,292,778.78
  5. Step 5: Solve for x
    x = 124,363,292,778.78/404,360.20
  6. Step 6: Final answer
    x = 307,555.72

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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.