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Finding the Fourth Proportional to 445,636.80, 668,872.80 and 235,425.60

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Solution

The fourth proportional to 445,636.80, 668,872.80 and 235,425.60 is: 353,359.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,636.80 : 668,872.80 = 235,425.60 : x
  2. Step 2: Convert to fraction form
    445,636.80/668,872.80 = 235,425.60/x
  3. Step 3: Cross multiply
    445,636.80x = 668,872.80 × 235,425.60
  4. Step 4: Simplify right side
    445,636.80x = 157,469,780,263.68
  5. Step 5: Solve for x
    x = 157,469,780,263.68/445,636.80
  6. Step 6: Final answer
    x = 353,359.01

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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.