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Finding the Fourth Proportional to 208,867.45, 288,229.35 and 113,372.11

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Solution

The fourth proportional to 208,867.45, 288,229.35 and 113,372.11 is: 156,449.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,867.45 : 288,229.35 = 113,372.11 : x
  2. Step 2: Convert to fraction form
    208,867.45/288,229.35 = 113,372.11/x
  3. Step 3: Cross multiply
    208,867.45x = 288,229.35 × 113,372.11
  4. Step 4: Simplify right side
    208,867.45x = 32,677,169,573.43
  5. Step 5: Solve for x
    x = 32,677,169,573.43/208,867.45
  6. Step 6: Final answer
    x = 156,449.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.