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Finding the Fourth Proportional to 300,966.40, 451,514.40 and 90,625.60

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Solution

The fourth proportional to 300,966.40, 451,514.40 and 90,625.60 is: 135,957.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,966.40 : 451,514.40 = 90,625.60 : x
  2. Step 2: Convert to fraction form
    300,966.40/451,514.40 = 90,625.60/x
  3. Step 3: Cross multiply
    300,966.40x = 451,514.40 × 90,625.60
  4. Step 4: Simplify right side
    300,966.40x = 40,918,763,408.64
  5. Step 5: Solve for x
    x = 40,918,763,408.64/300,966.40
  6. Step 6: Final answer
    x = 135,957.91

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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.