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Finding the Fourth Proportional to 308,000.40, 462,000.60 and 189,286.80

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Solution

The fourth proportional to 308,000.40, 462,000.60 and 189,286.80 is: 283,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,000.40 : 462,000.60 = 189,286.80 : x
  2. Step 2: Convert to fraction form
    308,000.40/462,000.60 = 189,286.80/x
  3. Step 3: Cross multiply
    308,000.40x = 462,000.60 × 189,286.80
  4. Step 4: Simplify right side
    308,000.40x = 87,450,615,172.08
  5. Step 5: Solve for x
    x = 87,450,615,172.08/308,000.40
  6. Step 6: Final answer
    x = 283,930.20

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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.