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Finding the Fourth Proportional to 268,205.88, 402,308.76 and 68,526.64

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Solution

The fourth proportional to 268,205.88, 402,308.76 and 68,526.64 is: 102,789.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,205.88 : 402,308.76 = 68,526.64 : x
  2. Step 2: Convert to fraction form
    268,205.88/402,308.76 = 68,526.64/x
  3. Step 3: Cross multiply
    268,205.88x = 402,308.76 × 68,526.64
  4. Step 4: Simplify right side
    268,205.88x = 27,568,867,565.37
  5. Step 5: Solve for x
    x = 27,568,867,565.37/268,205.88
  6. Step 6: Final answer
    x = 102,789.94

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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.