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Finding the Fourth Proportional to 290,431.74, 400,797.41 and 161,370.39

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Solution

The fourth proportional to 290,431.74, 400,797.41 and 161,370.39 is: 222,692.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,431.74 : 400,797.41 = 161,370.39 : x
  2. Step 2: Convert to fraction form
    290,431.74/400,797.41 = 161,370.39/x
  3. Step 3: Cross multiply
    290,431.74x = 400,797.41 × 161,370.39
  4. Step 4: Simplify right side
    290,431.74x = 64,676,833,555.84
  5. Step 5: Solve for x
    x = 64,676,833,555.84/290,431.74
  6. Step 6: Final answer
    x = 222,692.03

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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.