Home / 291,148.13-436,722.39-80,786.27

Finding the Fourth Proportional to 291,148.13, 436,722.39 and 80,786.27

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Solution

The fourth proportional to 291,148.13, 436,722.39 and 80,786.27 is: 121,179.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,148.13 : 436,722.39 = 80,786.27 : x
  2. Step 2: Convert to fraction form
    291,148.13/436,722.39 = 80,786.27/x
  3. Step 3: Cross multiply
    291,148.13x = 436,722.39 × 80,786.27
  4. Step 4: Simplify right side
    291,148.13x = 35,281,170,729.97
  5. Step 5: Solve for x
    x = 35,281,170,729.97/291,148.13
  6. Step 6: Final answer
    x = 121,179.45

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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.