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Finding the Fourth Proportional to 286,265.72, 428,744.54 and 136,611.08

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Solution

The fourth proportional to 286,265.72, 428,744.54 and 136,611.08 is: 204,604.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,265.72 : 428,744.54 = 136,611.08 : x
  2. Step 2: Convert to fraction form
    286,265.72/428,744.54 = 136,611.08/x
  3. Step 3: Cross multiply
    286,265.72x = 428,744.54 × 136,611.08
  4. Step 4: Simplify right side
    286,265.72x = 58,571,251,826.73
  5. Step 5: Solve for x
    x = 58,571,251,826.73/286,265.72
  6. Step 6: Final answer
    x = 204,604.49

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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.