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Finding the Fourth Proportional to 404,563.80, 606,165.30 and 319,999.80

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Solution

The fourth proportional to 404,563.80, 606,165.30 and 319,999.80 is: 479,461.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,563.80 : 606,165.30 = 319,999.80 : x
  2. Step 2: Convert to fraction form
    404,563.80/606,165.30 = 319,999.80/x
  3. Step 3: Cross multiply
    404,563.80x = 606,165.30 × 319,999.80
  4. Step 4: Simplify right side
    404,563.80x = 193,972,774,766.94
  5. Step 5: Solve for x
    x = 193,972,774,766.94/404,563.80
  6. Step 6: Final answer
    x = 479,461.52

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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.