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Finding the Fourth Proportional to 338,770.45, 508,203.92 and 111,017.28

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Solution

The fourth proportional to 338,770.45, 508,203.92 and 111,017.28 is: 166,541.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,770.45 : 508,203.92 = 111,017.28 : x
  2. Step 2: Convert to fraction form
    338,770.45/508,203.92 = 111,017.28/x
  3. Step 3: Cross multiply
    338,770.45x = 508,203.92 × 111,017.28
  4. Step 4: Simplify right side
    338,770.45x = 56,419,419,067.05
  5. Step 5: Solve for x
    x = 56,419,419,067.05/338,770.45
  6. Step 6: Final answer
    x = 166,541.74

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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.