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Finding the Fourth Proportional to 300,873.88, 451,320.54 and 90,513.64

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Solution

The fourth proportional to 300,873.88, 451,320.54 and 90,513.64 is: 135,773.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,873.88 : 451,320.54 = 90,513.64 : x
  2. Step 2: Convert to fraction form
    300,873.88/451,320.54 = 90,513.64/x
  3. Step 3: Cross multiply
    300,873.88x = 451,320.54 × 90,513.64
  4. Step 4: Simplify right side
    300,873.88x = 40,850,664,882.17
  5. Step 5: Solve for x
    x = 40,850,664,882.17/300,873.88
  6. Step 6: Final answer
    x = 135,773.38

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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.