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Finding the Fourth Proportional to 411,027.20, 616,540.80 and 115,500.80

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Solution

The fourth proportional to 411,027.20, 616,540.80 and 115,500.80 is: 173,251.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,027.20 : 616,540.80 = 115,500.80 : x
  2. Step 2: Convert to fraction form
    411,027.20/616,540.80 = 115,500.80/x
  3. Step 3: Cross multiply
    411,027.20x = 616,540.80 × 115,500.80
  4. Step 4: Simplify right side
    411,027.20x = 71,210,955,632.64
  5. Step 5: Solve for x
    x = 71,210,955,632.64/411,027.20
  6. Step 6: Final answer
    x = 173,251.20

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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.