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Finding the Fourth Proportional to 315,027.20, 472,238.40 and 104,556.80

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Solution

The fourth proportional to 315,027.20, 472,238.40 and 104,556.80 is: 156,734.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,027.20 : 472,238.40 = 104,556.80 : x
  2. Step 2: Convert to fraction form
    315,027.20/472,238.40 = 104,556.80/x
  3. Step 3: Cross multiply
    315,027.20x = 472,238.40 × 104,556.80
  4. Step 4: Simplify right side
    315,027.20x = 49,375,735,941.12
  5. Step 5: Solve for x
    x = 49,375,735,941.12/315,027.20
  6. Step 6: Final answer
    x = 156,734.83

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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.