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Finding the Fourth Proportional to 400,630.60, 600,869.22 and 120,147.40

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Solution

The fourth proportional to 400,630.60, 600,869.22 and 120,147.40 is: 180,198.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,630.60 : 600,869.22 = 120,147.40 : x
  2. Step 2: Convert to fraction form
    400,630.60/600,869.22 = 120,147.40/x
  3. Step 3: Cross multiply
    400,630.60x = 600,869.22 × 120,147.40
  4. Step 4: Simplify right side
    400,630.60x = 72,192,874,523.03
  5. Step 5: Solve for x
    x = 72,192,874,523.03/400,630.60
  6. Step 6: Final answer
    x = 180,198.10

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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.