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Finding the Fourth Proportional to 445,627.78, 668,394.28 and 125,771.74

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Solution

The fourth proportional to 445,627.78, 668,394.28 and 125,771.74 is: 188,644.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,627.78 : 668,394.28 = 125,771.74 : x
  2. Step 2: Convert to fraction form
    445,627.78/668,394.28 = 125,771.74/x
  3. Step 3: Cross multiply
    445,627.78x = 668,394.28 × 125,771.74
  4. Step 4: Simplify right side
    445,627.78x = 84,065,110,087.88
  5. Step 5: Solve for x
    x = 84,065,110,087.88/445,627.78
  6. Step 6: Final answer
    x = 188,644.23

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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.