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Finding the Fourth Proportional to 469,918.33, 648,469.90 and 255,053.78

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Solution

The fourth proportional to 469,918.33, 648,469.90 and 255,053.78 is: 351,964.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,918.33 : 648,469.90 = 255,053.78 : x
  2. Step 2: Convert to fraction form
    469,918.33/648,469.90 = 255,053.78/x
  3. Step 3: Cross multiply
    469,918.33x = 648,469.90 × 255,053.78
  4. Step 4: Simplify right side
    469,918.33x = 165,394,699,211.22
  5. Step 5: Solve for x
    x = 165,394,699,211.22/469,918.33
  6. Step 6: Final answer
    x = 351,964.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.