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Finding the Fourth Proportional to 500,782.28, 751,200.78 and 126,808.52

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Solution

The fourth proportional to 500,782.28, 751,200.78 and 126,808.52 is: 190,219.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,782.28 : 751,200.78 = 126,808.52 : x
  2. Step 2: Convert to fraction form
    500,782.28/751,200.78 = 126,808.52/x
  3. Step 3: Cross multiply
    500,782.28x = 751,200.78 × 126,808.52
  4. Step 4: Simplify right side
    500,782.28x = 95,258,659,134.65
  5. Step 5: Solve for x
    x = 95,258,659,134.65/500,782.28
  6. Step 6: Final answer
    x = 190,219.71

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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.