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Finding the Fourth Proportional to 266,789.60, 368,201.40 and 153,634.40

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Solution

The fourth proportional to 266,789.60, 368,201.40 and 153,634.40 is: 212,033.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,789.60 : 368,201.40 = 153,634.40 : x
  2. Step 2: Convert to fraction form
    266,789.60/368,201.40 = 153,634.40/x
  3. Step 3: Cross multiply
    266,789.60x = 368,201.40 × 153,634.40
  4. Step 4: Simplify right side
    266,789.60x = 56,568,401,168.16
  5. Step 5: Solve for x
    x = 56,568,401,168.16/266,789.60
  6. Step 6: Final answer
    x = 212,033.76

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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.