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Finding the Fourth Proportional to 290,786.60, 436,001.30 and 113,086.58

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Solution

The fourth proportional to 290,786.60, 436,001.30 and 113,086.58 is: 169,560.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,786.60 : 436,001.30 = 113,086.58 : x
  2. Step 2: Convert to fraction form
    290,786.60/436,001.30 = 113,086.58/x
  3. Step 3: Cross multiply
    290,786.60x = 436,001.30 × 113,086.58
  4. Step 4: Simplify right side
    290,786.60x = 49,305,895,892.55
  5. Step 5: Solve for x
    x = 49,305,895,892.55/290,786.60
  6. Step 6: Final answer
    x = 169,560.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.