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Finding the Fourth Proportional to 338,954.71, 508,074.60 and 111,190.85

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Solution

The fourth proportional to 338,954.71, 508,074.60 and 111,190.85 is: 166,669.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,954.71 : 508,074.60 = 111,190.85 : x
  2. Step 2: Convert to fraction form
    338,954.71/508,074.60 = 111,190.85/x
  3. Step 3: Cross multiply
    338,954.71x = 508,074.60 × 111,190.85
  4. Step 4: Simplify right side
    338,954.71x = 56,493,247,535.52
  5. Step 5: Solve for x
    x = 56,493,247,535.52/338,954.71
  6. Step 6: Final answer
    x = 166,669.01

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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.