Home / 305,815.10-422,010.50-169,857.33

Finding the Fourth Proportional to 305,815.10, 422,010.50 and 169,857.33

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Solution

The fourth proportional to 305,815.10, 422,010.50 and 169,857.33 is: 234,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,815.10 : 422,010.50 = 169,857.33 : x
  2. Step 2: Convert to fraction form
    305,815.10/422,010.50 = 169,857.33/x
  3. Step 3: Cross multiply
    305,815.10x = 422,010.50 × 169,857.33
  4. Step 4: Simplify right side
    305,815.10x = 71,681,575,912.68
  5. Step 5: Solve for x
    x = 71,681,575,912.68/305,815.10
  6. Step 6: Final answer
    x = 234,395.15

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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.