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Finding the Fourth Proportional to 367,750.80, 551,626.20 and 143,121.60

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Solution

The fourth proportional to 367,750.80, 551,626.20 and 143,121.60 is: 214,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,750.80 : 551,626.20 = 143,121.60 : x
  2. Step 2: Convert to fraction form
    367,750.80/551,626.20 = 143,121.60/x
  3. Step 3: Cross multiply
    367,750.80x = 551,626.20 × 143,121.60
  4. Step 4: Simplify right side
    367,750.80x = 78,949,624,345.92
  5. Step 5: Solve for x
    x = 78,949,624,345.92/367,750.80
  6. Step 6: Final answer
    x = 214,682.40

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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.