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Finding the Fourth Proportional to 208,881.67, 288,257.07 and 113,388.43

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Solution

The fourth proportional to 208,881.67, 288,257.07 and 113,388.43 is: 156,476.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,881.67 : 288,257.07 = 113,388.43 : x
  2. Step 2: Convert to fraction form
    208,881.67/288,257.07 = 113,388.43/x
  3. Step 3: Cross multiply
    208,881.67x = 288,257.07 × 113,388.43
  4. Step 4: Simplify right side
    208,881.67x = 32,685,016,603.70
  5. Step 5: Solve for x
    x = 32,685,016,603.70/208,881.67
  6. Step 6: Final answer
    x = 156,476.23

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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.