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Finding the Fourth Proportional to 305,789.71, 422,003.81 and 169,824.28

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Solution

The fourth proportional to 305,789.71, 422,003.81 and 169,824.28 is: 234,365.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,789.71 : 422,003.81 = 169,824.28 : x
  2. Step 2: Convert to fraction form
    305,789.71/422,003.81 = 169,824.28/x
  3. Step 3: Cross multiply
    305,789.71x = 422,003.81 × 169,824.28
  4. Step 4: Simplify right side
    305,789.71x = 71,666,493,190.51
  5. Step 5: Solve for x
    x = 71,666,493,190.51/305,789.71
  6. Step 6: Final answer
    x = 234,365.29

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1.5x scale

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.