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Finding the Fourth Proportional to 265,556.06, 398,451.81 and 139,166.27

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Solution

The fourth proportional to 265,556.06, 398,451.81 and 139,166.27 is: 208,811.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,556.06 : 398,451.81 = 139,166.27 : x
  2. Step 2: Convert to fraction form
    265,556.06/398,451.81 = 139,166.27/x
  3. Step 3: Cross multiply
    265,556.06x = 398,451.81 × 139,166.27
  4. Step 4: Simplify right side
    265,556.06x = 55,451,050,180.19
  5. Step 5: Solve for x
    x = 55,451,050,180.19/265,556.06
  6. Step 6: Final answer
    x = 208,811.09

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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.