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Finding the Fourth Proportional to 445,291.20, 668,106 and 267,920.64

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Solution

The fourth proportional to 445,291.20, 668,106 and 267,920.64 is: 401,982.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,291.20 : 668,106 = 267,920.64 : x
  2. Step 2: Convert to fraction form
    445,291.20/668,106 = 267,920.64/x
  3. Step 3: Cross multiply
    445,291.20x = 668,106 × 267,920.64
  4. Step 4: Simplify right side
    445,291.20x = 178,999,387,107.84
  5. Step 5: Solve for x
    x = 178,999,387,107.84/445,291.20
  6. Step 6: Final answer
    x = 401,982.76

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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.