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Finding the Fourth Proportional to 305,808.82, 422,010.81 and 169,837.56

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Solution

The fourth proportional to 305,808.82, 422,010.81 and 169,837.56 is: 234,372.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,808.82 : 422,010.81 = 169,837.56 : x
  2. Step 2: Convert to fraction form
    305,808.82/422,010.81 = 169,837.56/x
  3. Step 3: Cross multiply
    305,808.82x = 422,010.81 × 169,837.56
  4. Step 4: Simplify right side
    305,808.82x = 71,673,286,264.02
  5. Step 5: Solve for x
    x = 71,673,286,264.02/305,808.82
  6. Step 6: Final answer
    x = 234,372.86

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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.