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Finding the Fourth Proportional to 323,789.70, 484,812.98 and 211,190.80

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Solution

The fourth proportional to 323,789.70, 484,812.98 and 211,190.80 is: 316,217.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,789.70 : 484,812.98 = 211,190.80 : x
  2. Step 2: Convert to fraction form
    323,789.70/484,812.98 = 211,190.80/x
  3. Step 3: Cross multiply
    323,789.70x = 484,812.98 × 211,190.80
  4. Step 4: Simplify right side
    323,789.70x = 102,388,041,096.58
  5. Step 5: Solve for x
    x = 102,388,041,096.58/323,789.70
  6. Step 6: Final answer
    x = 316,217.72

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1.5x scale

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.