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Finding the Fourth Proportional to 445,517.70, 668,302.15 and 130,023.30

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Solution

The fourth proportional to 445,517.70, 668,302.15 and 130,023.30 is: 195,042.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,517.70 : 668,302.15 = 130,023.30 : x
  2. Step 2: Convert to fraction form
    445,517.70/668,302.15 = 130,023.30/x
  3. Step 3: Cross multiply
    445,517.70x = 668,302.15 × 130,023.30
  4. Step 4: Simplify right side
    445,517.70x = 86,894,850,940.10
  5. Step 5: Solve for x
    x = 86,894,850,940.10/445,517.70
  6. Step 6: Final answer
    x = 195,042.42

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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.