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Finding the Fourth Proportional to 276,755.39, 415,290.95 and 108,289.43

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Solution

The fourth proportional to 276,755.39, 415,290.95 and 108,289.43 is: 162,495.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,755.39 : 415,290.95 = 108,289.43 : x
  2. Step 2: Convert to fraction form
    276,755.39/415,290.95 = 108,289.43/x
  3. Step 3: Cross multiply
    276,755.39x = 415,290.95 × 108,289.43
  4. Step 4: Simplify right side
    276,755.39x = 44,971,619,718.21
  5. Step 5: Solve for x
    x = 44,971,619,718.21/276,755.39
  6. Step 6: Final answer
    x = 162,495.91

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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.