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Finding the Fourth Proportional to 268,704.64, 402,924.48 and 91,146.88

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Solution

The fourth proportional to 268,704.64, 402,924.48 and 91,146.88 is: 136,675.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,704.64 : 402,924.48 = 91,146.88 : x
  2. Step 2: Convert to fraction form
    268,704.64/402,924.48 = 91,146.88/x
  3. Step 3: Cross multiply
    268,704.64x = 402,924.48 × 91,146.88
  4. Step 4: Simplify right side
    268,704.64x = 36,725,309,227.62
  5. Step 5: Solve for x
    x = 36,725,309,227.62/268,704.64
  6. Step 6: Final answer
    x = 136,675.38

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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.