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Finding the Fourth Proportional to 291,299.40, 436,770.90 and 113,601.60

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Solution

The fourth proportional to 291,299.40, 436,770.90 and 113,601.60 is: 170,332.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,299.40 : 436,770.90 = 113,601.60 : x
  2. Step 2: Convert to fraction form
    291,299.40/436,770.90 = 113,601.60/x
  3. Step 3: Cross multiply
    291,299.40x = 436,770.90 × 113,601.60
  4. Step 4: Simplify right side
    291,299.40x = 49,617,873,073.44
  5. Step 5: Solve for x
    x = 49,617,873,073.44/291,299.40
  6. Step 6: Final answer
    x = 170,332.91

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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.