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Finding the Fourth Proportional to 445,842.60, 667,622.10 and 245,940.78

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Solution

The fourth proportional to 445,842.60, 667,622.10 and 245,940.78 is: 368,281.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,842.60 : 667,622.10 = 245,940.78 : x
  2. Step 2: Convert to fraction form
    445,842.60/667,622.10 = 245,940.78/x
  3. Step 3: Cross multiply
    445,842.60x = 667,622.10 × 245,940.78
  4. Step 4: Simplify right side
    445,842.60x = 164,195,500,019.24
  5. Step 5: Solve for x
    x = 164,195,500,019.24/445,842.60
  6. Step 6: Final answer
    x = 368,281.32

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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.