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Finding the Fourth Proportional to 445,557.77, 668,375.93 and 125,712.44

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Solution

The fourth proportional to 445,557.77, 668,375.93 and 125,712.44 is: 188,579.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,557.77 : 668,375.93 = 125,712.44 : x
  2. Step 2: Convert to fraction form
    445,557.77/668,375.93 = 125,712.44/x
  3. Step 3: Cross multiply
    445,557.77x = 668,375.93 × 125,712.44
  4. Step 4: Simplify right side
    445,557.77x = 84,023,170,982.79
  5. Step 5: Solve for x
    x = 84,023,170,982.79/445,557.77
  6. Step 6: Final answer
    x = 188,579.74

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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.